Mathematics, 25.07.2019 22:10 bnvghnbbb

Abox contains 20 red and 10 black beads. if two beads are picked at random from the box with replacement. find the probability that. they are both red, they are both black and they are of different colour.

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Abox contains 20 red and 10 black beads. if two beads are picked at random from the box with replace...

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