Question

A couple has two children, (i) find the probability that both children are males, if it is known that at least one of the children is male. (ii) find the probability that both children are females, if ti is known that the elder child is a female.

Answer 1

1) The probability in the first case is 1/2 , since there are two genders , male and female .

2) In the second case , the probability = 0 , as it is stated that both the children are male .