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January 31, 2015

January 31, 2015

Posted by **kitkat** on Sunday, November 28, 2010 at 10:47am.

- math 12 -
**Reiny**, Sunday, November 28, 2010 at 10:57amcan't have all staff or all sudents.

number of ways for all staff = C(15,5) = 3003

number of ways with all students = C(18,5) = 8568

With no restrictions = C(33,5) = 237336

So as stated above :

237336 - 3003 - 8568 = 225765

- math 12 -
**kitkat**, Sunday, November 28, 2010 at 11:54amThanks:) I got the same answer

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