Today marks the 20th anniversary of the release of the first Harry Potter book, Harry Potter and the Philosopher's Stone. If you were a child or a young teenager in the 90s or 00s, you almost certainly grew up on these books, devouring each new release and eagerly anticipating the film adaptations. 

But 20 years on, how much do you actually remember about that very first book? Take our quiz and find out if you're a magical genius or if you need to go back to Hogwarts to brush up on your magic knowledge