Can you solve this puzzle? Suppose you are in a room with no windows, 2 doors, and 2 computers. One door leads to heaven and the other one leads to a very unpleasant place. You are to choose the door that leads to heaven. Now one computer always tells a lie and the other always tells the truth. The rules of this game: you can ask one and only one question to one of the computers. You don’t know which computer tells.

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