[SOLVED] non adjacent objects - Math Help Forum

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#1

$Old$ October 22nd, 2009, 01:39 AM

milagros $milagros is offline$

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$Default$ [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

$Old$ October 22nd, 2009, 06:12 AM

milagros $milagros is offline$

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got it thank you.

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