## Answers

I don not no well the calclus is the same kinda so you should probally choose division yeah division.

The 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.

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