[StonyMan451]

Your probability is 100%, or 1.

[StonyMan451]

Nevermind. I misread the problem. I thought the question was what is the probability you have one son, and the answer was in the question.

[StonyMan451]

Nevermind. I misread the problem. I thought the question was what is the probability you have one son, and the answer was in the question.

[mattstat]

In my case, it is.

But how about Mr B? Here’s a twist: Mr B has two children, one of whom is a son born on 29 June. What is the probability that Mr B has two boys?