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Number cheerful
Checks the calculator is a large number of so-called gay (Happy Number). Number gay is a natural number is defined as follows: Calculate the sum of squares of digits of the number. Repeat this process for the next results as long as we get the number 1 or the results will be repeated. If you have received as a result of one, the original number is the number of gay. Otherwise, a number bleak.
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GCD + LCM (Euclidean algorithm)
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The calculator calculates the greatest common divisor (GCD) and least common multiple (LCM) of two numbers.
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Your first \ u0105 numbers \ u0119
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