Math, asked by Auliya4031, 1 year ago

How many numbers are there below 1000 whose sum of digits is 21?

Answers

Answered by firdossiddiqui

As according to question, the sum of digits is divisible by 7 ; Therefore we take LCM of 7 & 3 which is 21. A number would satisfy such a condition only if it's sum of digits is 21.
hope it will help

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