Using only the numbers 1, 2, 3, 4, 5 and 6 and the mathematical operations addition, subtraction, multiplication and division, can you arrive at the value 456? You ...
An amusing parlor trick is performed as follows. Ask spectator A to jot down any three-digit number and then to repeat the digits in the same order to make a six-digit number (e.g., 394,394). With ...
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