155k views
5 votes
How many different committees of 4 people can be chosen from a group of 21?

1 Answer

5 votes

Answer:

There are 21 ways to choose the first person, 20 ways to choose the second, 19 ways for the third and 18 ways for the fourth so the answer is 21 * 20 * 19 * 18 = 143640.

User RoguePlanetoid
by
4.4k points