Direction: Study the given information carefully and answer the questions that follow.
A basket contains 4 red, 5 blue and 3 green marbles
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If three marbles are picked at random, what is the probability that at least one is blue ?
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- 7/12
- 37/44
- 5/12
- 7/44
- None of the above
Correct Option: B
Total number of possible outcomes
= 12C3 = 220
Number of events which do not contain blue marbles (3 marbles out of 7 marbles) = 7C3 = 35
∴ Required probability = 1 - 35/220 = 37/44