MIT professor Shane Frederick's Cognitive Reflection Test is a three-question brain teaser with only a 17 per cent pass rate ...
Add Yahoo as a preferred source to see more of our stories on Google. These quizzes won't give you an exact IQ number, but they will tell you how smart you are by testing your expertise in various ...
The 'world's shortest IQ test' has only three questions, but it's far from easy to pass. A study by MIT professor Shane Frederick found that only 17% of participants were able to answer all three ques ...
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