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Mathematics, 05.05.2020 23:02 ilovejustinbieber42

En una clase universitaria de ciencias hay 30 alumnos, de los cuales 5 estudian física, 15 matemáticas y 10 biología. De estos mismos, 22 son mujeres y el resto hombres. ¿cuál sería la probabilidad de que al escoger un estudiante al azar para pasar al pizarrón éste fuese hombre y estudiante de matemáticas?

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