That's kinda what I was going for, but my illustration is really vague and inconsistent

Also, the older one being a boy doesn't make a difference in the end. The sequence only matters for the man's situation, which we agreed upon from the get-go, and if it instead said that the younger child had to be male we'd still get the same probability for the man.

@Pappenheimer: "Both boys" has a 1:4 chance since it can only be accomplished in one way, but "Half boy, half girl" has a 1:2 chance because there are two ways to accomplish it: Boy-Girl, and Girl-Boy (try not to look at this as a sequence, but as an indicator of two unique bodies that may be one sex or the other).

Jibb

EDIT: Posted while you posted. Reading your new post now.