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Thread: permutations/combinations

  1. Feb 15th, 2002, 05:15 PM #1
    sail3005
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    permutations/combinations

    can someone quickly verify me results? I am trying to figure out how to do this.

    this is what i got:

    15p10 = 10897286400

    15c10 = 3003


    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
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  2. Feb 15th, 2002, 07:48 PM #2
    sail3005
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    N/M i made a C++ app that confirmed it.

    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
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  3. Feb 15th, 2002, 09:40 PM #3
    Guv
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    Both results are correct according to my HP hand calculator.
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  4. Feb 15th, 2002, 10:27 PM #4
    sail3005
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    Thanks for confirming it. I think i finally understand these now

    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
    USAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSAUSA
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