You have 20 vintage concert t-shirts. Sadly your wife is making you throw away all but five of the shirts. How many different groups of shirts can you choose?

Question

Quizplus · Accepted Answer

The number of different groups of shirts you can choose is given by the combination formula C(n, k) = n! / (k!(n-k)!), where n is the total number of items to choose from, and k is the number of items to choose. Here, n = 20 and k = 5, so C(20, 5) = 20! / (5! * 15!) = 15504.

You Have 20 Vintage Concert T-Shirts