Out of 100 students,two sections of 40 and 60 are formed.If you and your friend are among the 100 students,what is the probability that You both enter the same section?

Explanation

a) If you and your friend enter the same section, probability will be 8
b) If you both enter the different section the probability will be
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^40 C_1 xx ^60 C_1/ ^100 C_2=40 xx 60 xx 2/100 xx 99^(prime)=48/99=16/33
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