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Mathematics, 24.12.2019 06:31 fffcc8759

Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw.

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Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size....
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