An urn contains 6red, 5 blue and 2 green marbles. If three marbles are – McqOptions

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1.	An urn contains 6red, 5 blue and 2 green marbles. If three marbles are picked at random, what is the probability that at least one is blue?
A.	115/197
B.	28/197
C.	28/143
D.	115/143
Answer» E.

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