Every week I take a cool on line quiz. You all know the type. About 15 questions on a particular topic. Random trivia about bubble gum one week, Groundhog Day facts for another, US Founding Fathers the next. After finishing the quiz I read the answers to the questions I missed - there's no explanation given to the missed questions, just the answers. The entire exercise takes about five minutes, and then I get on with my day.
I place little importance on that score. However, I retake the test later the same day to verify my ability to learn and retain new information. This means not only remember the answers to questions I missed, but also recalling the lucky and unlucky guesses.
So far, so good.