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What is the probability that the marble is black

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There are two boxes, the odd box containing I black marble and 3 white marbles, and the even box containing 2 black marbles and 4 white marbles. A box is selected at random, and a marble is drawn at random from the selected box.

a) What is the probability that the marble is black?

b) Given the marble is white, what is the probability that it came from the even box?

Reference no: EM131796734

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