Problema Solution
Ten people in your class want to be on a
5-person bowling team to represent the class.
How many diļ¬erent teams can be chosen?
Answer provided by our tutors
we need to find the number of 5-combinations from a set of 10 elements
C(n, k) = n!/(k!(n - k)!)
n = 10 and k = 5
C(10, 5) = 10!/(5!(10 - 5)!)
C(10, 5) = 252
there can be 252 different teams.