Question

MATH:a basketball team needs 5 players. The team can choose from a group of 7 players. Explain how to find the number of combinations of players that can be on the team.

Answer 1

Combination Formula: (n = distinct objects, r = how many you pick) n!/(r!(n-r)!

So n = 7, r = 5

n! = 7! = 5040
R! = 5! = 120
(n-r) = 2! = 2
120*2=240
5040/240 = 21

21 combinations!