5 Ignoring twins and other multiple births assume babies bor

5. Ignoring twins and other multiple births, assume babies born at a hospital are independent events with the probability that a baby is a boy and the probability that a baby is a girl both equal to 0.5. What is the probability that at least one of the next three babies is a boy? a. 0.750 b. 0.875 c. 0.333 d. 0.125

please explain how to do this

Solution

The probability that at least one of the next three babies is a boy also means that the other two are girls.

Thus, the required answer is: 0.5*0.5*0.5=0.125