The secret to acing exams

In tests that offer a choice of answers, you can exploit hidden patterns to get full marks if you know how, says William Poundstone.

Our fates in school and beyond are decided by pop quizzes, final exams, drivers’ exams, and professional exams. Many are true-or-false, or multiple-choice. If you get stumped by a question, it usually feels like you can do no better than guess. But could there be hidden patterns in these tests that point to the right answer?

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