С - combination Combination - Wikipedia, the free encyclopedia
C[n,k] = n!/(k!(n-k)!)
C[16,2] * C[24,3] = 242880
A class of 40 students must form groups of five for a class project. There are 24 women and 16 men in the class and each group must include 3 women and 2 men. In how many ways can the groups be made?
The answer is 242,880 but I haven't clue on how to set this up