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Archive for April, 2014

The most mysterious numbers

The most mysterious numbers are 6174,  142857 and 19790509. Do you know why? 6174 The number 6174 is a really mysterious number. At first glance, it might not seem so obvious. But as we are about to see, anyone who can subtract can uncover the mystery that makes 6174 so special. Kaprekar’s operation In 1949 […]