From 64d949698432e05f2a372d9edc859c5b9df1f438 Mon Sep 17 00:00:00 2001
From: kinitrupti
Date: Fri, 12 May 2017 18:40:35 +0530
Subject: Revised list of TBCs

---
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-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_1.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_1.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_10.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_10.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_11.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_11.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_12.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_12.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_13.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_13.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_14.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_14.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_15.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_15.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_2.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_2.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_3.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_3.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_4.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_4.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_5.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_5.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_6.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_6.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_7.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_7.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_8.ipynb
deleted file mode 100755
index db2cb5a6..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter10_8.ipynb
+++ /dev/null
@@ -1,711 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:a2d2127f6a5ebfde55eb11899a94f93b6aeee78155a32ab8e434ae8b263ad3b3"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "10 : ARRAYS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.2.1,page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "value = [6]\n",
-      "\n",
-      "for index in range(0,6):\n",
-      "    print \"Enter Integer\"\n",
-      "    value.append(int(input()))\n",
-      "for index in range(0,7):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  6\n",
-        "Integer =  12\n",
-        "Integer =  6\n",
-        "Integer =  7\n",
-        "Integer =  13\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.1, page number:170"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=[6,4,3,2,1]\n",
-      "for index in xrange(5):\n",
-      "    print \"Integer = \",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer =  6\n",
-        "Integer =  4\n",
-        "Integer =  3\n",
-        "Integer =  2\n",
-        "Integer =  1\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.3.2, page number:171"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE_CONST():\n",
-      "    return 123\n",
-      "def TRAILER_CONST():\n",
-      "    return -7777\n",
-      "value=array.array('i',[])\n",
-      "print \"Enter upto\",MAX_SIZE_CONST(),\"using\",TRAILER_CONST(),\"as trailer :\"\n",
-      "print \"\"\n",
-      "m=0\n",
-      "for index in range(0,int(MAX_SIZE_CONST())):\n",
-      "    item=int(input())\n",
-      "    if(item == int(TRAILER_CONST())):\n",
-      "        break\n",
-      "    else:\n",
-      "        value.append(item)\n",
-      "        m+=1\n",
-      "for index in range(0,m):\n",
-      "    print \"Integer =\",value[index]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter upto 123 using -7777 as trailer :\n",
-        "\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-7777\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integer = 1\n",
-        "Integer = 2\n",
-        "Integer = 3\n",
-        "Integer = 4\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.4.1, page number:172"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "k=0\n",
-      "sum=0.0\n",
-      "def MAX_STUD():\n",
-      "    return 20\n",
-      "def ENDINP():\n",
-      "    return -9999\n",
-      "mark=array.array('i',(0 for i in range(0,MAX_STUD())))\n",
-      "print \"enter upto\",MAX_STUD(),\"marks:\"\n",
-      "readin=int(input())\n",
-      "for index in range(0,MAX_STUD()):\n",
-      "    if(readin != ENDINP()):\n",
-      "        mark[index]=readin\n",
-      "        readin=int(input())\n",
-      "        k+=1\n",
-      "for index in xrange(0,k):\n",
-      "    sum=sum+mark[index]\n",
-      "print \"Average Mark = \",sum/k\n",
-      "    "
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "enter upto 20 marks:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "34\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "66\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "78\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "65\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "88\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-9999\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Average Mark =  51.125\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.5.1, page number:174"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 10\n",
-      "#str=array.array('i',(0 for i in range(0,MAX_SIZE()+1)))\n",
-      "print \"Enter the 10 letter word.\"\n",
-      "str=raw_input()\n",
-      "r=[]\n",
-      "for letter in str:\n",
-      "    r.append(letter)\n",
-      "r.reverse()\n",
-      "print \"word = \",str\n",
-      "print \"\".join(r)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the 10 letter word.\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "word =  madurai\n",
-        "iarudam\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.6.1, page number:175"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "def MAX_SIZE():\n",
-      "    return 20\n",
-      "size=0\n",
-      "variable =array.array('i',[])\n",
-      "while True:\n",
-      "    print \"Array-size : ?\"\n",
-      "    size=int(input())\n",
-      "    if size>1 and size<MAX_SIZE():\n",
-      "        break\n",
-      "print \"Enter Numbers:\"\n",
-      "for k in range(0,size):\n",
-      "    m=int(input())\n",
-      "    variable.append(m)\n",
-      "\n",
-      "variable= array.array('i',sorted(variable))\n",
-      "\n",
-      "print \"Sorted Array is:\"\n",
-      "for k in range(0,size):\n",
-      "    print variable[k],\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size : ?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Numbers:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "14\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sorted Array is:\n",
-        "-5 0 6 7 8 9 10 14 43\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "10.7.1,page number:176"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pox =[[0 for x in range(4)]for x in range(6)]\n",
-      "pox[0]=3,5,7,9,12,20\n",
-      "pox[1]=10,13,17,21,25,40\n",
-      "pox[2]=15,18,22,26,30,45\n",
-      "pox[3]=17,20,23,27,32,46\n",
-      "\n",
-      "def read_city():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which city?\"\n",
-      "        city=int(input())\n",
-      "        if city == 0:\n",
-      "            exit(1)\n",
-      "        if city<4 or city>4 :\n",
-      "            running=False\n",
-      "    return city\n",
-      "def read_year():\n",
-      "    running=True\n",
-      "    while running:\n",
-      "        print \"Which year?\"\n",
-      "        year=int(input())\n",
-      "        if year>1950 or year<2000 :\n",
-      "            running=False\n",
-      "    return year\n",
-      "def pop(x,y):\n",
-      "    global pox\n",
-      "    return pox[x-1][(y-1950)/10]\n",
-      "\n",
-      "def output_city():\n",
-      "    if city == 1:\n",
-      "        return \"Madurai\"\n",
-      "    elif city == 2:\n",
-      "        return \"Madras\"\n",
-      "    elif city == 3:\n",
-      "        return \"Bombay\"\n",
-      "    elif city == 4:\n",
-      "        return \"Calcutta\"\n",
-      "        \n",
-      "runnable=True\n",
-      "city=read_city()\n",
-      "while runnable :\n",
-      "    year=read_year()\n",
-      "    print \"Population in \",year,\"of\",output_city(),\"is\",pop(city,year),\"Lakhs\"\n",
-      "    city =read_city()\n",
-      "    if city == 0:\n",
-      "        runnable=False"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Which year?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Population in  1990 of Bombay is 30 Lakhs\n",
-        "Which city?\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_1.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_1.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_10.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_10.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_11.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_11.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_12.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_12.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_13.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_13.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_14.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_14.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_15.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_15.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_2.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_2.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_3.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_3.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_4.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_4.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_5.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_5.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_6.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_6.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_7.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_7.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_8.ipynb
deleted file mode 100755
index a7a687c2..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter11_8.ipynb
+++ /dev/null
@@ -1,404 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:92c507d5a01a7a0413aaf810859ecb2e4626113fce440f0c32977c3febad1c75"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "11:HANDLING OF CHARACTER STRINGS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.2.1, page number:180"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=['m','a','d','u','r','a','i']\n",
-      "print \"\".join(inform)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.3.1,page number:182"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.4.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "inform=\"Thiagaragar\"\n",
-      "numb=int(input(\"No. Of Char To Print \"))\n",
-      "print 'print format = %.0',numb,'s'\n",
-      "print inform[0:numb]"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "No. Of Char To Print 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "print format = %.0 6 s\n",
-        "Thiaga\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.5.1,page number:183"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "array1='Thiagarajar Engg'\n",
-      "array2=(array1 + '.')[:-1]\n",
-      "print \"array1 = \",array1\n",
-      "print \"array2 = \",array2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "array1 =  Thiagarajar Engg\n",
-        "array2 =  Thiagarajar Engg\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.6.1,page number:184"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "userInput = raw_input(\"Enter Int: \")\n",
-      "if userInput.isdigit():\n",
-      "    print \"Number = \"+userInput\n",
-      "else:\n",
-      "    print userInput,\"is not int type\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Int: 8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Number = 8\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.7.1,page number:186"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "first=\"Thiagrajar\"\n",
-      "second=first+\" Engg.\"\n",
-      "\n",
-      "print \"first = \",first\n",
-      "print \"second = \",second"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "first =  Thiagrajar\n",
-        "second =  Thiagrajar Engg.\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.8.1,page number:187"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "string1 = \"Hello\"\n",
-      "print \"len of str is\",len(string1)\n",
-      "string2 = \" There\"\n",
-      "print \"string1+string2 is\",string1+string2"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " len of str is 5\n",
-        "string1+string2 is Hello There\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "11.12.1, page number:189"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i=20\n",
-      "size=0\n",
-      "str1 =[]\n",
-      "str2=[]\n",
-      "def readSize():\n",
-      "    global size\n",
-      "    size=int(input(\"Enter number of strings : \"))\n",
-      "    if size<1 or size>i :\n",
-      "        readSize()\n",
-      "    return\n",
-      "def readArray():\n",
-      "    global size\n",
-      "    global str1\n",
-      "    print \"Enter the Strings..\"\n",
-      "    for k in range(0,size):\n",
-      "        m=raw_input()\n",
-      "        str1.append(m)\n",
-      "    return\n",
-      "def displayArray1():\n",
-      "    for index in range(0,size):\n",
-      "        print str1[index]\n",
-      "    return\n",
-      "def displayArray2():\n",
-      "    for index in range(0,size):\n",
-      "        print str2[index]\n",
-      "    return\n",
-      "def sortedArray():\n",
-      "    global str1\n",
-      "    global str2\n",
-      "    str2= sorted(str1)\n",
-      "    return\n",
-      "\n",
-      "readSize()\n",
-      "readArray()\n",
-      "print \"The unsorted array is..\"\n",
-      "displayArray1()\n",
-      "sortedArray()\n",
-      "print \"The sorted array is..\"\n",
-      "displayArray2()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number of strings : 6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Strings..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "computer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "page\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "diskette\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "eprom\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "binary\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "random\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The unsorted array is..\n",
-        "computer\n",
-        "page\n",
-        "diskette\n",
-        "eprom\n",
-        "binary\n",
-        "random\n",
-        "The sorted array is..\n",
-        "binary\n",
-        "computer\n",
-        "diskette\n",
-        "eprom\n",
-        "page\n",
-        "random\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_1.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_1.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_10.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_10.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_11.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_11.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_12.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_12.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_13.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_13.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_14.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_14.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_15.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_15.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_2.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_2.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_3.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_3.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_4.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_4.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_5.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_5.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_6.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_6.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_7.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_7.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_8.ipynb
deleted file mode 100755
index f5e720e1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter12_8.ipynb
+++ /dev/null
@@ -1,436 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fddb630ff591f8acea671441a1ef2200894f84585416ff0fca0f361802a87050"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "12:USER DEFINED FUNCTIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.4.1, page number:194"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",leng*width"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "16.8\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "43.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  734.16\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.1, page number:195"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def change_index():\n",
-      "    index=5\n",
-      "index=3\n",
-      "print \"index = \",index\n",
-      "change_index()\n",
-      "print \"index = \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "index =  3\n",
-        "index =  3\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.5.2, page number:196"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def get_a_value():\n",
-      "    return float(input())\n",
-      "def calc_area():\n",
-      "    global leng,width\n",
-      "    return leng*width\n",
-      "print \"Enter the Length..\"\n",
-      "leng=get_a_value()\n",
-      "print \"Enter the Width..\"\n",
-      "width=get_a_value()\n",
-      "print \"Area = \",calc_area()\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Length..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the Width..\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.6.1, page number:197"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def print_value(k):\n",
-      "    print k\n",
-      "numb=5\n",
-      "print \"Value of Expression : \",\n",
-      "print_value(numb*3+2)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Value of Expression :  17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.7.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def TOL():\n",
-      "    return 0.0001\n",
-      "def sqrt(n):\n",
-      "    if n>0.0:\n",
-      "        guess=0.0\n",
-      "        guess=n/2.0\n",
-      "        while True:\n",
-      "            if ((guess*guess-n) > TOL()) or ((guess*guess-n) < -TOL()):\n",
-      "                temp=guess+n/guess\n",
-      "                guess=temp/2.0\n",
-      "            else:\n",
-      "                break\n",
-      "        return guess\n",
-      "    else:\n",
-      "        return -1.0\n",
-      "            \n",
-      "numb=float(input(\"Enter number..\"))\n",
-      "print \"Square Root of\",numb,\"is\",sqrt(numb)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter number..17.1\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Square Root of 17.1 is 4.13521500873\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.8.1, page number:198"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "year=0\n",
-      "def leap(n):\n",
-      "    return (n%4 == 0)and(n%100 != 0)or(n%400 == 0)\n",
-      "year=int(input(\"Enter Year..\"))\n",
-      "if leap(year):\n",
-      "    print year,\"is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year..1984\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1984 is leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.1, page number:199"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def input_value():\n",
-      "    return input()\n",
-      "def area(l,w):\n",
-      "    return l*w\n",
-      "print \"Length = \"\n",
-      "length=input_value();\n",
-      "print \"Width = \"\n",
-      "width=input_value();\n",
-      "print \"Area = \",area(length,width)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Length = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "12.5\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Width = \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "23.7\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Area =  296.25\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "12.9.2, page number:200"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "value=1\n",
-      "def power(n,e):\n",
-      "    global value\n",
-      "    if(e<0):\n",
-      "        return 0\n",
-      "    for index in range(0,e):\n",
-      "        if(index < e):\n",
-      "            value*=n\n",
-      "            index+=1\n",
-      "    return value\n",
-      "            \n",
-      "number=int(input(\"Enter Integer...\"))\n",
-      "exponent=int(input(\"Enter Exponent...\"))\n",
-      "while True:\n",
-      "    if (exponent<0):\n",
-      "        exponent=input(\"Enter a Non-Negative Integer :\")\n",
-      "    else:\n",
-      "        break\n",
-      "print number,\"raised to \",exponent,\" = \",power(number,exponent)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer...4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Exponent...2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4 raised to  2  =  16\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_1.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_1.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_10.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_10.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_11.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_11.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_12.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_12.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_13.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_13.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_14.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_14.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_15.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_15.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_2.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_2.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_3.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_3.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_4.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_4.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_5.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_5.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_6.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_6.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_7.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_7.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_8.ipynb
deleted file mode 100755
index 0c43b667..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter13_8.ipynb
+++ /dev/null
@@ -1,125 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1ba129031b3dd7ed7efce1207bad751b6003f133c0f192eb72df391881da05bb"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "13:STRUCTURE AND UNIONS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.2.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \" \")\n",
-      "real = MyStruct(\" \",\"320.17\")\n",
-      "integer=integer._replace(fees=real.fees)\n",
-      "real=real._replace(regno=integer.regno)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",integer.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.3.1, page number:203"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "\n",
-      "student = MyStruct(\"1234\", \"320.17\")\n",
-      "\n",
-      "print \"Reg.no : \",student.regno,\",Reg.no : \",student.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg.no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "13.4.1, page number:204"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from collections import namedtuple\n",
-      "MyStruct = namedtuple(\"MyStruct\", \"regno fees\")\n",
-      "\n",
-      "integer = MyStruct(\"1234\", \"320.17\")\n",
-      "real = MyStruct(\"\",\"\")\n",
-      "real=real._replace(regno=integer.regno,fees=integer.fees)\n",
-      "\n",
-      "print \"Reg_no : \",real.regno,\",Reg.no : \",real.fees"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Reg_no :  1234 ,Reg.no :  320.17\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_1.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_1.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_10.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_10.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_11.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_11.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_12.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_12.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_13.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_13.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_14.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_14.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_15.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_15.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_2.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_2.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_3.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_3.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_4.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_4.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_5.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_5.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_6.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_6.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_7.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_7.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_8.ipynb
deleted file mode 100755
index 39ea0685..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter15_8.ipynb
+++ /dev/null
@@ -1,384 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:1653abf733b2f9f179249fa6301d56a0dc1802cab84a3f5e0ff6ee96488fe3f6"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "15:FILES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.4.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c[-1] == '.':\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming language is modern and advanced;\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming language is modern and advanced;\n",
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "it enables addressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "it enables addressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.9.1, Page number:224"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def EOF():\n",
-      "    return -1\n",
-      "while True:\n",
-      "    print \"Enter Text\"\n",
-      "    c = raw_input()\n",
-      "    print 'Text entered is:'\n",
-      "    print c\n",
-      "    if c != EOF():\n",
-      "        break"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "madurai is a great city ,meenakshi temple is in the heart,millions of pilgrims visit the temple every year.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.10.1,page numebr:231"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Key in Text:\"\n",
-      "f = open('myfile','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text is:\"\n",
-      "f = open('myfile','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Key in Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text is:\n",
-        "Madurai city is famous for its historical mounaments and archives,every visitor must see these places.\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.12.1,page numebr:233"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def file_output(x):\n",
-      "    f=open(x,\"r\")\n",
-      "    print f.read()\n",
-      "original = open('stud_rec','w')\n",
-      "copy = open('image','a')\n",
-      "\n",
-      "original.write(\"Tirupparankundram\\n\")\n",
-      "copy.write(\"Tirupparankundram\\n\")\n",
-      "\n",
-      "original.close()\n",
-      "copy.close()\n",
-      "\n",
-      "print \"After adding input,stud_rec has: \"\n",
-      "file_output(\"stud_rec\")\n",
-      "print \"After append,image contains:\"\n",
-      "file_output(\"image\")\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "After adding input,stud_rec has: \n",
-        "Tirupparankundram\n",
-        "\n",
-        "After append,image contains:\n",
-        "Tirupparankundram\n",
-        "Tirupparankundram\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.14.1,page number:237"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type in the Text:\"\n",
-      "f = open('madurai','w')\n",
-      "c=str(raw_input())\n",
-      "f.write(c)\n",
-      "print \"The text read as:\"\n",
-      "f = open('madurai','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type in the Text:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The text read as:\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.16.1,page number:239"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import os\n",
-      "import sys\n",
-      "import fileinput\n",
-      "import string\n",
-      "\n",
-      "print \"Madurai Contains :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()\n",
-      "\n",
-      "s = open(\"madurai_1\").read()\n",
-      "s = s.replace('temple', 'shrine')\n",
-      "f = open(\"madurai_1\", 'w')\n",
-      "f.write(s)\n",
-      "f.close()\n",
-      "\n",
-      "print \"Modified File now reads :\"\n",
-      "f = open('madurai_1','r')\n",
-      "print f.read()\n",
-      "f.close()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Madurai Contains :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi temple has no age\n",
-        "\n",
-        "Modified File now reads :\n",
-        "Madurai is an ancient city,ruled by pandyas,Tirumalai nayakar was the last prominent ruler who left many monuments; but meenakshi shrine has no age\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "15.18.1,page number:241"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import re\n",
-      "print \"Enter a stream of characters with integers embedded\"\n",
-      "c=raw_input()\n",
-      "print \"Integr is : \",re.sub(\"[^0-9]\", \"\", c)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter a stream of characters with integers embedded\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "ab+&473.tce\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Integr is :  473\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_1.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_1.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_10.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_10.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_11.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_11.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_12.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_12.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_13.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_13.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_14.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_14.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_15.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_15.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_2.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_2.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_3.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_3.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_4.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_4.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_5.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_5.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_6.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_6.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_7.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_7.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_8.ipynb
deleted file mode 100755
index 3371a2b1..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter5_8.ipynb
+++ /dev/null
@@ -1,50 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:fc199f6967bdaa418c011f64a9259bafc6cecf83675a6e55fed36bd7ff1a9671"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "5:C PROGRAMMING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "5.3,page number:124"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Welcome to C programming.\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Welcome to C programming.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_1.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_1.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_10.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_10.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_11.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_11.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_12.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_12.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_13.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_13.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_14.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_14.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_15.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_15.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_2.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_2.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_3.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_3.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_4.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_4.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_5.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_5.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_6.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_6.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_7.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_7.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_8.ipynb
deleted file mode 100755
index 4c020690..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter6_8.ipynb
+++ /dev/null
@@ -1,161 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:47d59a62b2c6bacca8aa43f556c3c49e598b6b0b52b3cecb75f5587ebd7d9f66"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "6:CONSTANTS,VARIABLES"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.1,page number:140"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m=4\n",
-      "n=6\n",
-      "p=8\n",
-      "result = m+n\n",
-      "print \"m+n=\",result\n",
-      "result = int (m/n)\n",
-      "print \"m/n=\",result\n",
-      "result = m*p\n",
-      "print \"m*p=\",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m+n= 10\n",
-        "m/n= 0\n",
-        "m*p= 32\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.2,page number:141"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "result= round(m+n-p*m+p/n,0)\n",
-      "print \"m=\",m,\",n=\",n,\",p=\",p\n",
-      "print \"m + n - p * m + p / n = \",result"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= 4 ,n= 6 ,p= 8\n",
-        "m + n - p * m + p / n =  -21.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.3,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 4\n",
-      "n = 6\n",
-      "print \" 6 mod 4 = \",n%m\n",
-      "print \"The modulus operator is : %\"\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " 6 mod 4 =  2\n",
-        "The modulus operator is : %\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "6.3.4,page number:142"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = -4\n",
-      "n = 6\n",
-      "p = 8\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p\n",
-      "print \"gives\"\n",
-      "m=-m\n",
-      "n=-n\n",
-      "p=-p\n",
-      "print \"m=\",m,\" n=\",n,\" p=\",p"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "m= -4  n= 6  p= 8\n",
-        "gives\n",
-        "m= 4  n= -6  p= -8\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_1.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_1.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_10.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_10.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_11.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_11.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_12.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_12.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_13.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_13.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_14.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_14.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_15.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_15.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_2.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_2.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_3.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_3.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_4.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_4.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_5.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_5.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_6.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_6.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_7.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_7.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_8.ipynb
deleted file mode 100755
index e3d4fa14..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter7_8.ipynb
+++ /dev/null
@@ -1,114 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:748883adf9987fa80917596c14388a91ad8fe34d417a5435c22239cebb03b99e"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "7.OPERATORS AND EXPRESSION"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.1,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number = 19+9\n",
-      "print \"The month of Februry has\",number,\"days\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The month of Februry has 28 days\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.4.2,page number:145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "number=15\n",
-      "total=number*4\n",
-      "print total,\"is 4 times greater than\",number,\"number.\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "60 is 4 times greater than 15 number.\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "7.8.1,page number:150"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "m = 2\n",
-      "n = 12.34\n",
-      "result=m*n\n",
-      "print m,\"*\",n,\"=\",result\n",
-      "print result,\"in scientific notation is\",\"{:.2E}\".format(result)\n",
-      "print m,\"*\",n,\"=\",round(result)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2 * 12.34 = 24.68\n",
-        "24.68 in scientific notation is 2.47E+01\n",
-        "2 * 12.34 = 25.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_1.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_1.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_10.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_10.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_11.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_11.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_12.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_12.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_13.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_13.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_14.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_14.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_15.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_15.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_2.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_2.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_3.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_3.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_4.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_4.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_5.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_5.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_6.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_6.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_7.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_7.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_8.ipynb
deleted file mode 100755
index 02731f67..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter8_8.ipynb
+++ /dev/null
@@ -1,139 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:9ca261b12dda6340bfb56a529d7d5db69661ff51a7fd92655edb700a9cae8e3b"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "8.MANAGING INPUT AND OUTPUT OPERATORS"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.1.1,page number:152"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"tce\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "tce\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.2.1,page number:153"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Text :\"\n",
-      "str=raw_input()\n",
-      "print \"Text entered is:\\n\",str"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Text :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Text entered is:\n",
-        "C programming Language is modern and advanced;it enables adressing bits and bytes.\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "8.3.1,page number:155"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter an Integer :\"\n",
-      "number=int(input())\n",
-      "print \"The Square Of \",number,\"is\",number*number"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter an Integer :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The Square Of  6 is 36\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_1.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_1.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_1.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_10.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_10.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_10.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_11.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_11.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_11.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_12.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_12.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_12.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_13.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_13.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_13.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_14.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_14.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_14.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_15.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_15.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_15.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_2.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_2.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_2.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_3.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_3.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_3.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_4.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_4.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_4.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_5.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_5.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_5.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_6.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_6.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_6.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_7.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_7.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_7.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
-        "6\n",
-        "7\n",
-        "8\n",
-        "9\n",
-        "11\n",
-        "12\n",
-        "13\n",
-        "14\n",
-        "16\n",
-        "17\n",
-        "18\n",
-        "19\n",
-        "21\n",
-        "22\n",
-        "23\n",
-        "24\n",
-        "26\n",
-        "27\n",
-        "28\n",
-        "29\n",
-        "31\n",
-        "32\n",
-        "33\n",
-        "34\n",
-        "36\n",
-        "37\n",
-        "38\n",
-        "39\n",
-        "41\n",
-        "42\n",
-        "43\n",
-        "44\n",
-        "46\n",
-        "47\n",
-        "48\n",
-        "49\n",
-        "51\n",
-        "52\n",
-        "53\n",
-        "54\n",
-        "56\n",
-        "57\n",
-        "58\n",
-        "59\n",
-        "61\n",
-        "62\n",
-        "63\n",
-        "64\n",
-        "66\n",
-        "67\n",
-        "68\n",
-        "69\n",
-        "71\n",
-        "72\n",
-        "73\n",
-        "74\n",
-        "76\n",
-        "77\n",
-        "78\n",
-        "79\n",
-        "81\n",
-        "82\n",
-        "83\n",
-        "84\n",
-        "86\n",
-        "87\n",
-        "88\n",
-        "89\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
\ No newline at end of file
diff --git a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_8.ipynb b/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_8.ipynb
deleted file mode 100755
index c59dc853..00000000
--- a/Computer_Concepts_and_C_Programming_by_R.Rajaram/chapter9_8.ipynb
+++ /dev/null
@@ -1,832 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:cf6bdce268b89df5f08741df390466a4ba8e95dbdba72ee30279eb61d19897af"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "9 : DECISION MAKING,BREAKING BRANCHING AND LOOPING"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.1.1,page number:156"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Type an Integer\"\n",
-      "numb=int(input())\n",
-      "if numb<=5:\n",
-      "    print \"Good Choice!\"\n",
-      "print \"Thank You!\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Type an Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Good Choice!\n",
-        "Thank You!\n"
-       ]
-      }
-     ],
-     "prompt_number": 1
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.2.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter year : \"\n",
-      "year= int(input())\n",
-      "if year%4 == 0 and year%100 != 0 or year%400 == 0:\n",
-      "    print year,\"is a leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter year : \n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.1,page number:157"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Year :\"\n",
-      "year=int(input())\n",
-      "if year%4 == 0 :\n",
-      "    if year % 100 != 0:\n",
-      "        print year,\"is leap year\"\n",
-      "    else:\n",
-      "        if year%400 == 0:\n",
-      "            print year,\" is leap year\"\n",
-      "else:\n",
-      "    print year,\"is not a leap year\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Year :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1990 is not a leap year\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.3.2,page number:158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter the number\"\n",
-      "numb =int(input())\n",
-      "if numb<=100:\n",
-      "    if numb>=30:\n",
-      "        print numb,\"lies between 30-100\"\n",
-      "    else:\n",
-      "        print numb,\"is outside 30-100\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "40 lies between 30-100\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.4.1,page number : 158"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter choice of city(1-4)\"\n",
-      "city = int(input())\n",
-      "if city == 1:\n",
-      "    print \"Madurai\"\n",
-      "elif city == 2:\n",
-      "    print \"Chennai\"\n",
-      "elif city == 3:\n",
-      "    print \"Mumbai\"\n",
-      "elif city == 4:\n",
-      "    print \"Calcutta\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter choice of city(1-4)\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "3\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Mumbai\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.5.1,page number:159"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "numb=int(input(\"Enter the number\"))\n",
-      "if numb == 0:\n",
-      "    print \"prints case0\"\n",
-      "elif numb == 1:\n",
-      "    print \"prints case1\"\n",
-      "elif numb == 2:\n",
-      "    print \"prints case2\" \n",
-      "else:\n",
-      "    print"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter the number2\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "prints case2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.6.1,page number : 161"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "import array\n",
-      "i =20\n",
-      "variable =array.array('i',[])\n",
-      "size = 0\n",
-      "\n",
-      "def get_array_size():\n",
-      "    print \"Array-size :\"\n",
-      "    global size\n",
-      "    size=int(input())\n",
-      "    if size<1 or size>i :\n",
-      "        get_array_size()\n",
-      "    \n",
-      "def input_fetch():\n",
-      "    global size\n",
-      "    global variabless\n",
-      "    for k in range(0,size):\n",
-      "        m=int(input())\n",
-      "        variable.append(m)\n",
-      "    return\n",
-      "\n",
-      "def sort_list():\n",
-      "    global variable\n",
-      "    variable= array.array('i',sorted(variable))\n",
-      "    \n",
-      "    return\n",
-      "    \n",
-      "def output():\n",
-      "    for k in range(0,size):\n",
-      "        print variable[k],\n",
-      "    return\n",
-      "\n",
-      "def even(number):\n",
-      "    if number/2 == 0:\n",
-      "        return 1\n",
-      "    else:\n",
-      "        return 0\n",
-      "\n",
-      "get_array_size()\n",
-      "input_fetch()\n",
-      "sort_list()\n",
-      "print \"The sorted list is :\"\n",
-      "output()\n",
-      "print \"\\nMedian : \",\n",
-      "\n",
-      "median=round((variable[(size/2)-1]+variable[size/2])/2,3) if even(size)  else float(variable[size/2])\n",
-      "print median"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Array-size :\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "7\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "8\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "-4\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "0\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "13\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "17\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "25\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "6\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "The sorted list is :\n",
-        "-4 0 5 6 6 7 8 13 17 25 \n",
-        "Median :  7.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.8.1,page number:163"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "index = 1\n",
-      "while index<12:\n",
-      "    print \"This is line \",index\n",
-      "    index+=1\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "This is line  1\n",
-        "This is line  2\n",
-        "This is line  3\n",
-        "This is line  4\n",
-        "This is line  5\n",
-        "This is line  6\n",
-        "This is line  7\n",
-        "This is line  8\n",
-        "This is line  9\n",
-        "This is line  10\n",
-        "This is line  11\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.1,page number:164"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer\"\n",
-      "total_sum=0\n",
-      "numb=int(input())\n",
-      "while numb>0:\n",
-      "    digit=numb %10\n",
-      "    total_sum+=digit\n",
-      "    numb/=10\n",
-      "print \"Sum is \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1776\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum is  21\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.9.2,page number:165"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Enter Integer:\"\n",
-      "numb=int(input())\n",
-      "print numb,\"is reversed as \",\n",
-      "while numb>0:\n",
-      "    digit=numb%10\n",
-      "    print digit,\n",
-      "    numb/=10\n",
-      "print \"\\n\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Enter Integer:\n"
-       ]
-      },
-      {
-       "name": "stdout",
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234\n"
-       ]
-      },
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1234 is reversed as  4 3 2 1 \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.1,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "for index in range(1,11):\n",
-      "    print \" line \",index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        " line  1\n",
-        " line  2\n",
-        " line  3\n",
-        " line  4\n",
-        " line  5\n",
-        " line  6\n",
-        " line  7\n",
-        " line  8\n",
-        " line  9\n",
-        " line  10\n"
-       ]
-      }
-     ],
-     "prompt_number": 2
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.2,page number:166"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "print \"Result\"\n",
-      "print \"Index     Index Squared\"\n",
-      "print \"_____     _____________\"\n",
-      "for  index in range(1,11):\n",
-      "    print index,\"         \",index*index"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Result\n",
-        "Index     Index Squared\n",
-        "_____     _____________\n",
-        "1           1\n",
-        "2           4\n",
-        "3           9\n",
-        "4           16\n",
-        "5           25\n",
-        "6           36\n",
-        "7           49\n",
-        "8           64\n",
-        "9           81\n",
-        "10           100\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.10.3,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "total_sum=0\n",
-      "value=100\n",
-      "for index in range(1,value+1):\n",
-      "    total_sum+=index\n",
-      "print \"Sum of 1 to \",value,\" = \",total_sum"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Sum of 1 to  100  =  5050\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "9.11.1,page number:167"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "def exceptive():\n",
-      "    for index in range(1,90):\n",
-      "        if index%5 == 0:\n",
-      "            continue\n",
-      "        print index\n",
-      "exceptive()"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "1\n",
-        "2\n",
-        "3\n",
-        "4\n",
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-   "metadata": {}
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- ]
-}
\ No newline at end of file
-- 
cgit