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diff --git a/273/CH25/EX25.2/ex25_2.sce b/273/CH25/EX25.2/ex25_2.sce
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+++ b/273/CH25/EX25.2/ex25_2.sce
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+clc;
+clear;
+//example 25.2
+//addition of binary numbers
+
+a=1010.00;        //first number 
+b=0011.11;        //second number
+A=bin21dec(a);   //converting a in to decimal number 
+B=bin21dec(b);   //converting b in to decimal number 
+S=A+B;          //adding the two decimal numbers
+temp=dec21bin(S); //converting the decimal sum back to binary
+format('v',10);   //changing the default precision to 8
+disp(temp,'sum is'); //displaying the final output
+\ No newline at end of file