ali8765ahmed8765 ali8765ahmed8765

14-10-2016
Mathematics

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A box contains 8 green and 4 blue marbles. Two marbles are selected (at once with no replacement). Find the expected number of green marbles among the selected ones.

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allisonlennon1922 allisonlennon1922

14-10-2016

The answer is the amazing 32

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