Your personal search engine is slow! This happens to me. Usually the correct answer to a question comes to me in the middle of night and wakes me up. I've often said to someone, 'No. Can't think of it right now. I'll call you when I remember, probably around 3.00 am.'
Well, being put under the pressure empties out the intelligent part of your brain a Bit. Best way to remember is to chew him while studying. Then chew the same flavor gum while taking the quiz. It'll put the answers in your head