Mathematics, 17.05.2021 18:30 constipatedcow18

An urn contains 20 marbles identical in every respect except color. There are 7 red marbles, 8 green marbles and 5 blue marbles. You draw two marbles from the urn but do not replace the first ball before drawing the second. Find the probability that the first ball is green and the second is green.

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An urn contains 20 marbles identical in every respect except color. There are 7 red marbles, 8 green...

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