Beach Day by Rodger Bliss
October 2022
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Light Switches

There are 3 switches downstairs, each corresponding to one of the light bulbs upstairs. How can you figure out which light switch goes to which light bulb by only making 1 trip upstairs?

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2 guesses to Light Switches


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  • MiniGuess

    Turn on one switch, leave it for about a couple of minutes, and then turn it off.
    Then turn on the next switch.
    When you go upstairs now, you can automatically determine the switch of the light bulb that is already turned on.
    Then you can feel the other two light bulbs and the one that is slightly hotter is the first switch that you turned on.

  • Dude

    That is absolutely correct!

    Couldn’t have explained it better myself!

    You’re today’s winner.