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The Three Switches

May 15, 2024
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The Three Switches
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You are in a basement with three light switches, each corresponding to one of three light bulbs in the attic. You can't see the bulbs from the basement. How can you tell which switch corresponds to which bulb with only one trip to the attic?

Answer: Turn on one switch and wait a few minutes. Turn it off, turn on another, and go to the attic. The lit bulb…

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