olymmath

RU-ALLRUSSIAN 1986 Problem 19

    Prove that Isin1l+Isin2l+…+Isin3nl>8n/5\mathrm{Isin} 1\mathrm{l} + \mathrm{Isin} 2\mathrm{l} + \ldots + \mathrm{Isin} 3\mathrm{nl} > 8\mathrm{n} / 5

    Dataset text NuminaMath olympiads. Quoted with source.

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