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How many qualified numbers? (Posted on 2019-04-24) Difficulty: 2 of 5
If a square number has a digit sum of 2019, that number is called a qualified number. How many qualified numbers are there?

No Solution Yet Submitted by Danish Ahmed Khan    
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Solution solution Comment 1 of 1
The digital root of 2019 is 3 and is therefore divisible by 3 but not my 9 and so can't be square, so there are no such numbers.
  Posted by Charlie on 2019-04-24 11:57:48
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