what is the probability for a family with 3 children to have a girl and two boys ( assuming the probability of having a boy or a girl is equal ) ?	Choose the correct choice from the following.
A) 1 / 8
B) 1 / 4
C) 1 / 2
D) 3 / 8
E) 5 / 8

Rationale: one possible case is : girl - boy - boy the probability of this is 1 / 2 * 1 / 2 * 1 / 2 = 1 / 8 there are 3 c 2 = 3 such cases so we should multiply by 3 . p ( one girl and two boys ) = 3 / 8 the answer is d .
Answer: D