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So when writing a combination you would put for example 2C1 which is the same as saying 2 choose 1. Is there anything like that for permutations? In other words can you say 2 ______ 1 if you are given 2P1? Is there a word like choose for permutations?

 Apr 28, 2016
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I do not say   2 choose1   

I would simply say    2C1       and in the same vein I'd say      2P1      for a permutation.  (I'd just use the letter name)

 

There are lots of different notations for these.  When I am writing by hand I do it the way I just showed you, with thew first number as a superscript and the second as a subscript but if I was being lazy with typing i'd say   2C1

 

Sometimes the 2 are presented in brackets with the 2 above the 1. (That is just for combinations)

 Apr 28, 2016

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