You are trapped in a dungeon, and see two doors in front of you. One is a way out, andther will lead to certain death.

Two people are standing in front of these doors, one of them a Knight, another - a Liar. Naturally, you do not know who is who, but they know each other's true nature.

Both the people know which way is correct, but you can only ask one question of one of them before making your choice. What will you ask?

Ask one of them what door the other would say leads to the way out. Which ever door he says, go out through the other one because both the liar and the knight are involved in the question, so the answer is definitely going to be a lie.

Posted by Lewis on 2003-05-04 20:46:37