A. When dealing with committees, we will always be using combinations.
1. The reason we are always using combinations is because a committee is composed of people, and it is the same committee even if you change the order of the people chosen. So order does matter.
Ex [1] How many 3-member committees can be formed from a group of 6 people?
a. The answer is C(6,3) = 20.
Ex [2] How many 2-member committees can be formed from a group of 10 people?
a. The answer is C(10,2) = 45.