Michael and Surrey are planning to have three children. Assuming it is equally likely for a boy or a girl to be born, what is the probability that at least one of their children will be a boy?
A)1/8
B)3/8
C)5/8
D)7/8

Question

Quizplus · Accepted Answer

The probability of having at least one boy equals 1 minus the probability of having all girls. The probability of having all girls is (1/2) x (1/2) x (1/2) = 1/8. Therefore, the probability of having at least one boy is 1 - 1/8 = 7/8.

Michael and Surrey Are Planning to Have Three Children