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A class consists of 12 girls and 10 boys. In how many ways

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Manager
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Joined: 28 Aug 2004
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A class consists of 12 girls and 10 boys. In how many ways [#permalink] New post 06 Jun 2005, 01:22
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A class consists of 12 girls and 10 boys. In how many ways can the class form a line if the girls always remain in order from shortest to tallest within the line and the boys always remain in order from tallest to shortest within the line?
Director
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Joined: 18 Apr 2005
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Re: a line [#permalink] New post 06 Jun 2005, 02:49
Dan wrote:
A class consists of 12 girls and 10 boys. In how many ways can the class form a line if the girls always remain in order from shortest to tallest within the line and the boys always remain in order from tallest to shortest within the line?


22!/(12!10!) = 646,646
Senior Manager
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 [#permalink] New post 06 Jun 2005, 08:29
awesome improvisation sparky.

HMTG.
  [#permalink] 06 Jun 2005, 08:29
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A class consists of 12 girls and 10 boys. In how many ways

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