I haven't done a puzzle for a while, but I heard this one over lunch today:
There are two doors, one with a prize behind it and one without. There are two people guarding the doors, one which always tells the truth and the other always tells a lie. They both know which door the prize is behind and if the other is truthful or not.Email
You're allowed to ask one question to one of them and then you can pick a door to try to win the prize. What question should you ask?
your solutions. I'll post an answer in about a week.