An urn contains 6 red, 5 blue and 2 green marbles. If three marbles are picked at random, what is the probability that at least one is blue?

An urn contains 6 red, 5 blue and 2 green marbles. If three marbles ar

1.	An urn contains 6 red, 5 blue and 2 green marbles. If three marbles are picked at random, what is the probability that at least one is blue?
A.	$\frac{{28}}{{143}}$$
B.	$\frac{{115}}{{97}}$$
C.	$\frac{{28}}{{197}}$$
D.	$\frac{{115}}{{143}}$$
Answer» E.

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An urn contains 6 red, 5 blue and 2 green marbles. If three marbles are picked at random, what is the probability that at least one is blue?

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