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Digit Sum of 21 (Posted on 2024-12-13) Difficulty: 2 of 5
Determine the number of non-negative integers x with x < 1010 that have a digit sum of 21.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
SolutionAnalytic solutionLarry2024-12-13 10:20:18
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