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Mathematics, 26.10.2020 17:20 sskibi1243

Se presentaron entre 50 y 80 participantes del Nivel 1. Para trabajar durante el certamen se pudieron agrupar en forma exacta si lo hacían de a cuatro; pero si lo hacían de a cinco, faltaba una persona. ¿Cuántos participantes del Nivel 1 se postularon?

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