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Omni-MATH / For how many integers a with 1≤a≤10 is a²⁰¹⁴+a²⁰¹⁵ divisible by 5? · Discussion

Discussing For how many integers a with 1≤a≤10 is a²⁰¹⁴+a²⁰¹⁵ divisible by 5? · Omni-MATH

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