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The Three Light Switches Riddle
one bulb, one look
There are 3 switches outside a closed room. Exactly 1 of them controls a light bulb inside. You can flip the switches however you like, but you may enter the room only 1 time. How can you tell which switch controls the bulb?
Source: A classic puzzle, retold by INFINITE SUM and fact-checked against our curated notes
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