What is the probability that in a family...

What is the probability that in a family of 4 children there will be at least one boy ?

A

`15/16`

B

`3/8`

C

`1/16`

D

`7/8`

Text Solution

Verified by Experts

The correct Answer is:

A

Total possibility of 4 children, either girl or boy is `2^(4) = 16`. Out of these there is one possibility in which there will be no boy and only girls. So, total possibility of at least one boy is 16 - 1 = 15
`rArr` P(at least one boy) `= 15/16`.

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