Relevant Competitive Tests:
A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are picked at random, what is the probability that they are all blue?
A. 1/455Correct Answer
B. 2/455
C. 1/91
D. 4/455
Correct Option: A. 1/455
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