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November 28, 2014

November 28, 2014

Posted by **KC** on Wednesday, January 26, 2011 at 5:38pm.

The answer in the book is 369600. But I do not understand how they got this answer.

- Math -
**MathMate**, Wednesday, January 26, 2011 at 9:47pmThe number of ways groups of m and (n-m) objects that can be formed from n distinct objects is

n!/(m!(n-m)!)

The analogous formula for groups each consisting of m1, m2, m3...mt objects (which add up to n) is:

n!/(m1!m2!m3!....mt!), where m1+m2+m3...mt = n.

Thus the number of ways of partitioning 12 students into 4 groups of 3 is 12!/(3!3!3!3!)

= 369600

- Math -
**keke**, Thursday, January 27, 2011 at 6:20pmi don not no well the calclus is the same kinda so you should probally choose division yeah division

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