A compound event is an event that is a combination of two or more events. Below is an example. Compound events can be illustrated using a Venn diagram.

• In the diagram below, the shaded region illustrates the event that a randomly chosen number is odd and not prime.

• In the diagram below, the shaded region illustrates the event that a basketball player scored $2\text{-}$point field goals and $1\text{-}$point free throws but did not score any $3\text{-}$point field goals during a game.

The probability of compound events can be found using the Addition Rule of Probability.