Category: Logic Puzzles

  • A Ping-Pong Ball in a Hole

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    by

    Jaume
    in

    Your last good ping-pong ball fell down into a narrow metal pipe imbedded in concrete one foot deep.How can you get it out undamaged, if all the tools you have are your tennis paddle, your shoe-laces, and your plastic water bottle, which does not fit into the pipe?

  • Bulbs

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    by

    Jaume
    in

    There are three switches downstairs. Each corresponds to one of the three light bulbs in the attic. You can turn the switches on and off and leave them in any position.How would you identify which switch corresponds to which light bulb, if you are only allowed one trip upstairs?