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ok, ive got another one.
Your outside of a room, there are 3 light switches 8 feet away from a door. Only one light switch turns on the light inside the room, the other 2 do nothing. You must figure out exactly what light switch turns on the light inside the room. You can only open the door once, and once you open it and go in, you cant get out. You cant prop the door open, it opens and closes at the speed of light.
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