Fancy yourself a bit of a math whiz? Then this is the quiz to push you to your mental arithmetic limits. A new test shared on quiz site Playbuzz is leaving even the most brilliant of minds stumped, ...

Use a No. 2 pencil, fill out each circle completely, and don't make any stray marks--these are rules every child learns when taking standardized tests that are largely based on multiple choice. But ...

The world's shortest IQ test not only reveals your intelligence but also your level of patience. The test, called a Cognitive Reflection Test (CRT), consists of three math-based questions that target ...