A woman has two kids. One is a boy. What are the odds the other is a boy?

That is true. I believe out of every birth, 2/3 chance = female ; 1/3 chance = male, or something or the like. I don't remember the exact %. So if that's correct, 33% is the true answer.

So there's about twice as many females on the planet compared to males?

I wish that was true, though.


I've heard somewhere that there's a 50.5% chance of getting a boy because newborn boys die more commonly than newborn girls. Though I don't recall any sources to this.