These four general knowledge quizzes are going to test your knowledge about, well, everything. Some will be harder than others, and one question literally stumped millions of people, but the wide ...

Optical illusion puzzles have been there for centuries and these are fun challenges that are designed to play tricks on our eyes and brains. Optical illusions work on a simple principle where it ...

Add Yahoo as a preferred source to see more of our stories on Google. These quizzes will test your general trivia knowledge, but they also aren't your typical BuzzFeed quizzes. One of them replicates ...