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A certain club has 20 members. What is the ratio of the

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Manager
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A certain club has 20 members. What is the ratio of the [#permalink]

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New post 23 Jan 2008, 03:39
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A certain club has 20 members. What is the ratio of the member of 5-member
committees that can be formed from the members of the club to the number of 4-member
committees that can be formed from the members of the club?

A. 16 to 1
B. 15 to 1
C. 16 to 5
D. 15 to 6
E. 5 to 4

Please Explain, OA will follow
Director
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Re: PS Set #22 [#permalink]

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New post 23 Jan 2008, 05:46
I think it is C,

16 to 5

I used combinations and the ratio would be ->

(20!/(5! X 15!)) / (20!/(4! X 16!)) => (16! X 4!)/(15! X 5!) =>16/5
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Re: PS Set #22 [#permalink]

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Answer C
Senior Manager
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Re: PS Set #22 [#permalink]

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New post 23 Jan 2008, 13:24
C too because of the same reasons.
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New post 25 Jan 2008, 11:40
Sorry for thh late reply. OA is C
tnx
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Re: A certain club has 20 members. What is the ratio of the [#permalink]

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New post 13 Mar 2016, 12:40
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Re: A certain club has 20 members. What is the ratio of the   [#permalink] 13 Mar 2016, 12:40
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