The probability of having a girl is identical to the probability of having a boy. In a family with four children, what is the probability that all the children are of the same gender? Choose the correct answer
A) 1/8. B) 1/3 C) 1/4 D) 1/6 E) 1/2
There are two cases. All boys and all girls   case 1. all boys.   1/2*1/2*1/2*1/2= 1/16   case 2 .all girls.   1/2*1/2*1/2*1/2=1/16   We will add the cases to get 1/8
<result>A</result>
The probability of having a girl is identical to the probability of having a boy. In a family with four children, what is the probability that all the children are of the same gender?