__The variable n is the total number of possible choices, and r is the number chosen.__

In permutations,

There are 60 different *permutations* of medal winners, or 60 different sets of 3 that would win either gold, silver, or bronze medals

Here is a script which does the math for you.

Enter the number (*n*) of items involved and the the number of items to be combined (*c*):

Enter the number (