99% of people don't know these secret calculation tricks!
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13:33
Ancient trick to calculate ANY square root
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12:46
6 Impossible Puzzles With Surprising Solutions
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14:29
How Wrong Can a Calculator Be?
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12:11
Simple Explanation of the Birthday Paradox
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12:41
7 puzzles with surprising solutions
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22:59
The Dome Paradox: A Loophole in Newton's Laws
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17:01
The rarest move in chess
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12:16