Mathematics, 08.07.2019 18:40 la200564

Abag contains 80 marbles: 40 are red, 20 are blue, and 20 are black. what is the probability of selecting a red or blue marble at random

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Abag contains 80 marbles: 40 are red, 20 are blue, and 20 are black. what is the probability of sel...

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