Question

In a two children family, find the probability that there is at least one girl in a family.

Answer 1

S = {BB, BG, GB, GG}

n(S) = 4

Event of atleast one girl in a family say A

A= {BG, GB, GG}

n( A) = 3

P(A) = \(\frac{n(A)}{n(S)}=\frac{3}{4}\)

Probability of at least one girl in a family is \(\frac{3}{4}\)