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?

I took the dog for a walk to discuss. She suggested asking any one of them the following:

“If I ask the other guy if your door is the correct one, will he tell the truth?”

(fingers crossed)