2012-03-10, 09:26 PM
I had the following problem for discrete HW, and I can't think of a solution:
10 distinct pens are handed out to 4 distinct children, such that each child gets at least 2 pens. How many ways are there to do this?
10 distinct pens are handed out to 4 distinct children, such that each child gets at least 2 pens. How many ways are there to do this?