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format .pdf, 0.9 MB - Recreaţii Matematice

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câte trei elemente din mulţime, obţinem următoarele 10 sume: 3, 6, 8, 10, 11, 13,15, 16, 18, 20. Determinaţi mulţimea A. (În legătură cuoproblemădeconcursdinIugoslavia.)Gabriel Popa, IaşiSoluţie. Fie A = {a, b, c, d, e} cu a

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