Multiple Choice Questions on A box contains 6 blue 5 green and 4 red balls If two balls are pick at random then what is the proba........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A box contains 6 blue 5 green and 4 red balls If two balls are pick at random then what is the proba...........

Quantitative Aptitude ( CCS) Probability
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    A box contains 6 blue, 5 green and 4 red balls. If two balls are pick at random, then what is the probability that neither is blue? 

    10/21

    Incorrect Answer

    12/35

    Correct Answer

    3/5

    Incorrect Answer

    11/21

    Incorrect Answer
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    Explanation:

    Answer & Explanation
    12/35
    Explanation: 
    Total balls = 15
    Not blue means green or red i.e. any of (5+4) = 9 balls
    So prob. = 9C2 / 15C2

    By: Sandeep Dubey
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