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En una caja hay fichas verdes (V), rojas (R), azules (A) y negras (N). El experimento “sacar una ficha y anotar su color” se puede representar en el siguiente diagrama de árbol, donde en cada rama se ha escrito la probabilidad de cada resultado.
¿Cuál es la probabilidad de que la bolita extraída sea verde o azul?


Sagot :

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