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How many ways can a committe of three be made from a pool of

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Director
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How many ways can a committe of three be made from a pool of [#permalink] New post 30 Dec 2004, 00:11
How many ways can a committe of three be made from a pool of 5 male candidates and 3 female candidates if there is to be at least 1 male?

please show work
Director
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 [#permalink] New post 30 Dec 2004, 07:43
MMMMM
FFF

with each committe having at least 1 male

MMM
MFM
MFF

I will say 3. This sound too simple to be true. I bet there is a trick behind this. :P Anticipates OA
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 [#permalink] New post 30 Dec 2004, 10:32
I would say 55

Total possible committees: 8*7*6/(2*3)=56
Number of committees with no males: 1
Total committees= 56-1=55
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 [#permalink] New post 30 Dec 2004, 12:39
I'd say 15.. what is the answer?
Director
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 [#permalink] New post 30 Dec 2004, 16:50
55.
8C3 - 3C3 => (8 * 7) - 1 = 56 -1 = 55
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 [#permalink] New post 30 Dec 2004, 18:17
Just to say that in my actual GMAT exam, I got a similar "committee" question. If you reach the high 40s, you better know your probability/combination concepts well.
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Director
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 [#permalink] New post 30 Dec 2004, 18:32
OA is 55 :-D

good work!
Director
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 [#permalink] New post 30 Dec 2004, 18:37
Paul wrote:
Just to say that in my actual GMAT exam, I got a similar "committee" question. If you reach the high 40s, you better know your probability/combination concepts well.


:-D
  [#permalink] 30 Dec 2004, 18:37
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