Question

There are 15 appetizers available at a restaurant. From these, Jane is to choose 13 for her party. How many groups of 13 appetizers are possible?

Answer 1

105 groups

Explanation:

We use the formula:

n! / (r!(n - r)!)

Let's put in the value.

15! / (13!(15 - 13)!) = 105

So, there are 105 groups of 13 appetizers.