Trapped in a Room with 2 Doors

A man is trapped in a room with 2 doors and a small hole in the ceiling 10 inches in diameter. Behind one of the doors is an extremely hungry lion that hasn’t eaten in a couple of days. Behind the other door is a glass tunnel that magnifies the heat from the sun creating temperatures so high that even opening the door could kill you. How does the man escape?


He waits until it is night and leaves through the glass tunnel. He can tell that it is night through the hole in the ceiling.

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