Think you're smart? Prove it! This book contains 25 brain-stumping IQ quizzes, featuring wordplay, diagrams, numerical challenges, and more, that will really put solvers to the test. Over 1,000 questions really reveal whether or not you can think abstractly, comprehend complex ideas, figure out the progression of a sequence, simplify fractions, create new words out of old and decode anagrams. But above all, they're designed to entertain, so quiz-takers can decide if they want to check out their own abilities, play against friends, or follow their fancy by just dipping into the book at random. For those who really want to assess their performance, a time limit of 90 minutes is allowed for each test.