Twelve marbles are in an urn. Three marbles are red, 4 marbles are blue and five are yellow. Two marbles are chosen with
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Twelve marbles are in an urn. Three marbles are red, 4 marbles are blue and five are yellow. Two marbles are chosen with
Twelve marbles are in an urn. Three marbles are red, 4 marbles are blue and five are yellow. Two marbles are chosen without replacement, the probability that the first marble chosen is red and the second is blue is:
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