Question

how many times can the least number consisting of the digits 7,2,9,1 be subtracted from the greatest number consisting of the same digit and what will be the last remainder.​

Answer 1

greatest 5 digit number is 99999, the largest 5 digit multiple is 6 is 99996 which is 99999–3.

So basically you can subtract any multiple of 6 +3 that is smaller than the number itself.

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