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How many ways can Otto pick 3 people for his foursome out of

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Director
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How many ways can Otto pick 3 people for his foursome out of [#permalink] New post 02 Jan 2004, 10:18
How many ways can Otto pick 3 people for his foursome out of a pool of 30 friends?


1) 128
2) 678
3) 789
4) 4060
5) 8320

:wave


edited choice 4 (oops!)

Last edited by Titleist on 02 Jan 2004, 11:38, edited 2 times in total.
Senior Manager
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 [#permalink] New post 02 Jan 2004, 10:55
I am assuming that 3 people out of 30. Is that right ? But the answer I am getting is not listed in your choice.
Director
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 [#permalink] New post 02 Jan 2004, 11:05
Geethu wrote:
I am assuming that 3 people out of 30. Is that right ? But the answer I am getting is not listed in your choice.



slight error - thanks geethu!
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 [#permalink] New post 02 Jan 2004, 11:33
4) is the answer
assuming 4 as 4060.
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 [#permalink] New post 02 Jan 2004, 11:38
Yes - right again Geethu!

:oops:
Director
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 [#permalink] New post 02 Jan 2004, 11:40
30 choose 3.

I hope I won't have to bang out that kind of math on the exam...

Did you know if you type (without the quotes) "30 choose 3" into google, that it solves the problem for you?

Neat.
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 [#permalink] New post 02 Jan 2004, 11:44
Wasn't expecting you guys to solve the problem - but who am I kidding - you guys are the combinatorics aces on this board.

:2gunfire:
  [#permalink] 02 Jan 2004, 11:44
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How many ways can Otto pick 3 people for his foursome out of

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