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2. De 200 familias, 80 compran el periodico A, 95 el periodico B y 40 no compran A, pero si B. Si se selecciona una

2. De 200 familias, 80 compran el periodico A, 95 el periodico B y 40 no compran A, pero si B. Si se selecciona una familia al azar, calcule la probabilidad de que: a) Compre A o B b) Compre A, pero no B

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