I can remember mine just fine.
If you're really looking for smart people, use "Answer this word problem in two or more paragraphs. Write your answer on the sheet of paper provided. In cursive."
Doing this may well expose you to age discrimination lawsuits, since it's just sneaky indirect age filtering.
Another example would be if you required a minimum SAT score of 1601. Sure, someone could have gone off and taken the SAT as an adult or a young child but in reality it is mainly an age filter.
My kids are learning cursive in elementary school right now, FWIW.
By definition, people who know more things are smarter than people who know fewer things. That's just how it works.
For centuries, people have striven to improve themselves through the acquisition of knowledge and skills. It is a quirk of recent generations that so many members take pride in their lack of knowledge.
I'm repeatedly bewildered by my Millennial colleagues who proudly say "I don't know what that means," or boast "I don't know what that is" with no sense of shame.
But of course this is a lot of unnecessary steps compared to the usual method: length of work and education history +18 years.