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# (P/S) The greatest value of n

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Manager
Joined: 02 Apr 2006
Posts: 93

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(P/S) The greatest value of n [#permalink]

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26 Nov 2007, 05:39
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Question) When 20!/ 2n becomes an integer, what is the greatest value of the positive integer n?

Kudos [?]: 54 [0], given: 0

CEO
Joined: 17 Nov 2007
Posts: 3584

Kudos [?]: 4586 [0], given: 360

Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40

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26 Nov 2007, 06:12

N=20!/2

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CEO
Joined: 29 Mar 2007
Posts: 2554

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Re: (P/S) The greatest value of n [#permalink]

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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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Senior Manager
Joined: 06 Aug 2007
Posts: 360

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26 Nov 2007, 19:22
walker wrote:
:-D

N=20!/2

agree!! or 19!*10

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26 Nov 2007, 19:22
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