Consider these events.
A = The survey respondent is less than 40 years old.
B = The survey respondent is 40 years or older.
Events A and B are mutually exclusive and exhaustive.

Question

Quizplus · Accepted Answer

Mutually exclusive events cannot happen at the same time, and exhaustive events cover all possible outcomes. In this case, a respondent can only be either less than 40 years old (event A) or 40 years or older (event B), and there are no other possibilities. Therefore, A and B are mutually exclusive and exhaustive.

Consider These Events. A = the Survey Respondent Is Less Than 40 Years