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Old 07-31-2007   #1
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Default Hii :] People who like math...help me pleassssse! Ty?

The digital root of a number is found by adding all the digits of the number and of that result, and so on until a single digit is obtained. The digital root of 759 is 3 because 7 + 5 + 9 = 21 and 2 + 1 = 3. The digital root of 813,520 is 1 because 8 + 1 + 3 + 5 + 2 + 0 = 19, 1 + 9 = 10, and 1 + 0 - 1. If a number is the square of a positive integer, find the numbers that are possible digital roots.
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