In my statistics class I am making use of permutations very often. I need to make sure I understand this.(adsbygoogle = window.adsbygoogle || []).push({});

If I have a set of 13 elements, I can arrange that 13! different ways, because Psub(13,13) = 13!/0!.

If I pick 2 elements from those 13 elements, I can get 13!/11! different results.

Is that what it means?

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# Understanding Permutations

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