How well do you know Harry Potter?
There are many fans of Harry Potter out there. So many, that we probably could take over the world. But that's beside the point. Have you read the books? You'd better have, otherwise you won't be able to answer a single one of these questions.
Just as a warning, I made this difficult. Very difficult. I've read the books ten times, so I know all these facts by heart. Hopefully you'll be able to get at least one. The best of luck to you, my fellow Potterhead.