A bag contains 3 white, 4 black and 5 green marbles. if 2 marbles are drawn at random from the bag, find the probability that both balls are different in color?
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A. 0.25
B. 0.15
C. 0.35
D. 0.45
E. 0.40[Reveal]
B. 0.15
C. 0.35
D. 0.45
E. 0.40[Reveal]
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