By design, the average intelligence quotient (IQ) is 100 for all people, with scores that assess your ability to think, ...

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This is a straightforward vocabulary test, so if you've ever taken the SATs, this will feel totally familiar. Take the quiz here. It's highly unlikely you'll ever need to write something without spell ...

How sharp are your eyes? How quickly does your brain spot anomalies? Solving this puzzle requires sharp observation, patience ...