18 Riddles Only People with a PhD Can Solve

In order to develop creative thinking, some psychologists advise solving different riddles and quizzes. Such exercises develop critical thinking, improve memory, and reduce the risk of AlzheimerÔÇÖs. Bright Side prepared 18 riddles of varying complexity that will help you both train your brain and entertain yourself. You’ll have only 10 seconds after each puzzle to […]

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