"Consider this question. A chap flips a coin in the morning and thereby chooses one of his two children. Today he will only talk about that child. Later I meet

"Consider this question. A chap flips a coin in the morning and thereby chooses one of his two children. Today he will only talk about that child. Later I meet him and he talks about his son. I thereby deduce that he has at least one boy. What are the chances he has two children? Answer: 1/2." Do you mean "what are the chances he has two sons, not children? By the way, thanks for your input on this thread, I'm sure I speak for many in saying that I really appreciate it!