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Jdam
  Re: Choir of 5 boys and 6 Girls [#permalink]
New postPosted: Mon Dec 19, 2011 5:39 pm 
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Kudos (?): 2 (0), given: 12
2 ways to solve this problem:

1 is by physically writing each arrangement down...
g(5b)ggggg
gg(5b)gggg
and so on

OR

"Stick" boys together since they are all together. You get 7!/6! = 7

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