Question

A literary magazine editor must choose 4 short stories for this month's issue from 17 submissions. in how many ways can the editor choose this month's stories?

Answer 1

The item above is answered through the concept of Combination since the arrangement of how the magazines are to be chosen from the total number of magazines given is not a factor. The mathematical expression for this combination is,

   n = 17C4

or "combination of 17 taken 4. 

    n = (17!) / (4!)(17-4)!

    n = 2380


Answer: 2,380