How should one select the winner of an election? If there are only two candidates, the answer is clear— choose the...
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Kaprekar’s Constant
Take any four digit number (whose digits are not all identical), and do the following: Rearrange the string of digits...
Continue reading...Why an International Date Line?
Can you find a continuous one-to-one function from the circle to the real line? Put it another way: is it possible, for...
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