The answer to the maths question was: "age>21".
Make up a question that could have this as an answer.
Sure! Here's a question that could have the answer "age>21":
Question: In order to become a U.S. Senator, what eligibility requirement must a person meet?
Explanation: To find the answer, we need to understand what the eligibility requirements are for becoming a U.S. Senator. One of the requirements is that the person must be at least 30 years old. So, the mathematical representation of this requirement can be represented as "age > 21" because in order to be at least 30 years old, the person's age must be greater than 21.