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

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

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

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