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AMO-Bench 2025 Problem 7

  • Answer

⌊n!(n+1)(n+2)⌋\left\lfloor \frac{n!}{(n+1)(n+2)} \right\rfloor represents the greatest integer less than or equal to n!(n+1)(n+2)\frac{n!}{(n+1)(n+2)}. Find all possible values of ⌊n!(n+1)(n+2)⌋−⌊132⋅n!(n+1)(n+2)⌋×32.\left\lfloor \frac{n!}{(n+1)(n+2)} \right\rfloor - \left\lfloor \frac{1}{32} \cdot \frac{n!}{(n+1)(n+2)} \right\rfloor \times 32.

Dataset text AMO-Bench. Open licence.

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{0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30}

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