Q.

The probability that in a family of five children, there will be atleast one boy is

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a

3132

b

132

c

532

d

2732

answer is A.

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Detailed Solution

2n−12n=25−125=3132Probability that  atleast one boy=1-(probability that all are girls)
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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Best Books for NEET
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