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Mathematics, 25.02.2021 19:50 ralphy34

En un estante hay libros de diversos contenidos. De esos libros, 40 presentan contenidos de matemáticas; 24 de física; 50 de química; 15 de matemáticas y física; 17 física y química; 13 de matemáticas y química; y 10 de matemática, física y química. ¿cuántos libros poseen exclusivamente contenidos de matemáticas?

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