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OMM 2024 Problem 2

    Determina todas las parejas (a,b)(a, b) de enteros que satisfacen

    • 5≤b<a5 \leq b < a,
    • Existe un número natural nn tal que los números ab\frac{a}{b} y a−ba - b son divisores consecutivos de nn, en ese orden.

    Nota. Dos enteros positivos x,yx, y son divisores consecutivos de mm, en ese orden, si no existe un divisor dd de mm tal que x<d<yx < d < y.

    Official text Mexican Mathematical Olympiad 2024 official paper, page 61. Quoted with source.

    A model read this text from the scan of the paper by OCR, with vision/claude@2.1.318 (claude-opus-5-5). No person has checked it against the paper yet.

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