In a certain country, a person must be at least 16 years old to drive a car and must be at least 18 years to vote. The variable age represents the age of a person as an integer.

Which of the following expressions evaluates to true if the person is old enough to drive but not old enough to vote, and evaluates to false otherwise?

• (age ≥ 16) AND (age ≤ 18)
• (age ≥ 16) AND (NOT(age ≥ 18))
• (age < 18) AND (NOT(age < 16))

Summary Submit Skip Question

I is incorrect since a person with age 18 would cause the expression to evaluate to true. We wish to exclude those that can vote.

II is correct. It includes those 16 and older and excludes those 18 or older.

III is correct. It includes those younger than 18 and includes those 16 or older.