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# Quantitative Aptitude :: Probability - Discussion

Home > Quantitative Aptitude > Probability > MCQs Questions Discussion

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Choose the correct option.

## A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

A10/21

B11/21

C2/7

D5/7

Show Explanation

Solution: 2 red, 3 green, and 2 blue balls are there. So the probability of getting no blue ball is not selecting any blue ball among the two chosen balls hence 5C2.

5C2/7C2 = 10/21.

7C2 because we can select any 2 balls from 7 balls in that number of ways.