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(P/S) The greatest value of n

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(P/S) The greatest value of n [#permalink] New post 26 Nov 2007, 05:39
Question) When 20!/ 2n becomes an integer, what is the greatest value of the positive integer n?
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 [#permalink] New post 26 Nov 2007, 06:12
:-D

N=20!/2
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Re: (P/S) The greatest value of n [#permalink] New post 26 Nov 2007, 18:48
pretttyune wrote:
Question) When 20!/ 2n becomes an integer, what is the greatest value of the positive integer n?



20!/2n ---> plug in 20!/2 for N we get 20!/2(20!/2) ---> 20!/20!=1
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 [#permalink] New post 26 Nov 2007, 19:22
walker wrote:
:-D

N=20!/2


agree!! or 19!*10 :)
  [#permalink] 26 Nov 2007, 19:22
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