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MathNet 2022-part-02 — 197 problems (EN–VI) Question 14

Math Olympiad Vault · MathNet 2022-part-02 — 197 problems (EN–VI)

Question 14

Does there exist a positive integer $n$ such that across all representations $n = ab$, the digits $0, 1, \dots, 9$ are all present as the final digit of $a^b$ at least once?