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Thread: [SOLVED] non adjacent objects

  1. October 21st 2009, 11:39 PM #1
    milagros
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    [SOLVED] non adjacent objects

    Have 30 distinct books in a row and must calculate the ways in wich I can 10 books (without the order mattering) so that no adjacent books (next to each other) are selected.

    Is this C( 30-10+1, 10)=21? I think I got it wrong.
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  2. October 22nd 2009, 04:12 AM #2
    milagros
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    got it thank you.
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