#### Answer

When you use the Fundamental Counting Principle, you are counting the number of ways two or more events can occur in sequence.

#### Work Step by Step

In some cases, an event can occur in so many different ways that it is not practical to write out all the outcomes. When this occurs, you can rely on the Fundamental Counting Principle. The Fundamental Counting Principle can be used to find the number of ways two or more events can occur in sequence.