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+//Chapter 07: Discrete Probability
+
+clc;
+clear;
+
+p0=0.9      //prob of bit 0 generation
+p1=1-p0   //prob of bit 1 generation
+total_bits=10   //total bits generated
+reqd_bits=8   //reqd bits out of totalbits generated
+
+function result=combination(n,r) //function definition
+i=n
+num=1
+denominator=1
+l=(n-r)+1
+u=n
+for i=l:u //to compute the value of the numerator
+num=num*i
+end
+for j=1:r //to compute the value of the denominator
+denominator=denominator*j
+end
+result=num/denominator 
+return result
+endfunction
+
+//Using theorem 2
+prob_eight_0=combination(total_bits,reqd_bits)*((p0)**reqd_bits)*((p1)**(total_bits-reqd_bits))
+
+disp(prob_eight_0,'Probability of exactly eight 0 bits generated is')