Math, asked by keshavgargritu6642, 11 months ago

Why sum of digits while adding always equal to sum of digits of the answer

Answers

Answered by ApekshaChoudary

The sum of the digits of a positive integer is its remainder when dividing by 9. Thus, if n is given and you add its digits, the result is the same as subtracting a certain multiple of 9 from n.

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