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8. For any natural number n, expressed in base 10 , let S(n) denote the sum of all digits of n. Find all natural numbers n such that n cube= 8S(n) cube + 6nS(n) + 1. |
| Answer» 8. For any natural number n, expressed in base 10 , let S(n) denote the sum of all digits of n. Find all natural numbers n such that n cube= 8S(n) cube + 6nS(n) + 1. | |