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Puzzle idea

  1. Aug 24, 2005 #1
    Hello everyone,
    I was wondering if you could advise me a good puzzle I could give to my engineering-major friends, something tough that they would break their brains on :devil:. I was thinking of petals around the rose.
    Any other suggestions are very much welcome!
     
  2. jcsd
  3. Aug 25, 2005 #2

    Tide

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    Science Advisor
    Homework Helper

    How about this one?

    What comes next in the sequence:

    1
    11
    21
    1211
    111221
    312211
    ...

    ?

    It's guaranteed to bust their brain! :)
     
  4. Aug 25, 2005 #3
    Yeah...but I have to know the solution :surprised

    ok, hold on, I'll try to bust my brains first, but I'm short on time...
    edit: my solution: 13112221 correct?
     
    Last edited: Aug 25, 2005
  5. Aug 25, 2005 #4

    Tide

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    EvLer,

    Very good!
     
  6. Aug 25, 2005 #5

    JamesU

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    Gold Member

    Too easy. If you really want to stump 'em, give 'em this:

    and if you can memorize the answer:

     
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