re: #411 Mich-again

OK here’s a decent one.

You are in a room with two doors and you only get one chance to pick the one door that leads out. A man stands guard at each door. One of the men always lies and the other always tells the truth but you don’t know which one is the liar. Both men know which door is the correct one. You get to ask only one question to one of them to determine which is the correct door. What do you ask?

If I were to ask you if this is the door that leads out, what would you tell me?