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Find the number of ways in which 5 boys and 5 girls may be

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Find the number of ways in which 5 boys and 5 girls may be [#permalink] New post 06 Jan 2004, 16:04
Find the number of ways in which 5 boys and 5 girls may be seated in a row so that no two girls are together.
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Re: Comb - boys and girls [#permalink] New post 06 Jan 2004, 16:32
kpadma wrote:
Find the number of ways in which 5 boys and 5 girls may be seated in a row so that no two girls are together.


could be

G B G B G B G B G B

or

B G B G B G B G B G

thus (5! x 5!)x2 = 28,880
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 [#permalink] New post 06 Jan 2004, 17:25
Ans: 28800 is correct!
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 [#permalink] New post 06 Jan 2004, 17:46
:oops: Yup, forgot the possibility that it could interchangeably start by a boy or a girl
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 [#permalink] New post 09 Jan 2004, 14:26
Sorry folks!
This answer is correct if "Find the number of ways in which 5 boys and 5 girls can be seated alternately in a row?"
kpadma wrote:
Ans: 28800 is correct!

The correct answer for the posted question is 86400.

:? :oops:
  [#permalink] 09 Jan 2004, 14:26
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