Only highly intelligent readers can solve this math puzzle in 6 seconds. Test your IQ and problem-solving skills now!

How good are you at spotting subtle differences? Do you easily overlook minute details in everyday life? This optical ...

Do you think you're smart? I'm gonna have to ask you to prove it by taking these general knowledge quizzes. They'll test you on all kinds of random stuff, which should be no problem for a genius like ...

Are you smarter than the average U.S. student?Welcome to the ultimate Academic IQ Challenge, inspired by the Nation’s Report ...

Part 3!Are you ready to put your mind to the test? This challenge is designed especially for the visual thinkers who love ...

Think you're good at general knowledge or clued up on pop culture? Take this week's pub quiz to see how you score.