Mr. Smith has two children. If the eldest child is a boy, what is the probability that the other child is also a boy?

Question

50-50

Answer 1

The probability that Mr. Smith's other child is also a boy is 1/2 or 50%.

This is because the gender of each child is independent of the other child's gender. Regardless of the gender of the eldest child, the probability of the other child being a boy or a girl is the same. So, if the eldest child is a boy, the other child could be a boy or a girl with equal probability. Therefore, the probability of the other child being a boy is 1/2.

Answer 2

The probability that the other child is also a boy, given that the eldest child is a boy, is 1/2 or 50-50. This is because the gender of one child does not affect the gender of the other child, so each child has an independent 50% chance of being a boy.