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AMO-Bench 2025 Problem 17

  • Answer

Let {x1,x2,…,x2025}={1,2,…,2025}\{x_1, x_2, \ldots, x_{2025}\} = \{1, 2, \ldots, 2025\}. Find the greatest positive integer less than ∑i=12024xixi+1.\sum_{i=1}^{2024} \frac{x_i}{x_{i+1}}.

Dataset text AMO-Bench. Open licence.

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2016

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