Cranky alert. Consider yourself warned.
In my daughters' geometry textbooks are several questions that result in answers that have double meanings. You know the ones. 420. That other two-digit number that would make a room of high school students smirk. Last year, in a different textbook, there was another number that made my daughters' middle-school math teacher burst out laughing, but they couldn't remember what it was.
Years ago, a math writer thought it would be funny to tuck a reference to Mary Kay Letourneau into a test question.
The writers must think it's funny. Maybe they are grandiose in their thinking and consider themselves subversive. It just seems immature to me.
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