Multiple Choice Questions on A bag contain 6 white balls and 4 red balls Three balls are drawn randomly What is the probabil........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A bag contain 6 white balls and 4 red balls Three balls are drawn randomly What is the probabil...........

Quantitative Aptitude ( CCS) Probability
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    A bag contain  6 white balls and 4 red balls .Three balls are drawn randomly.What is the probability that one ball is red and other 2 are white?

    1/2

    Correct Answer

    2/1

    Incorrect Answer

    3/2

    Incorrect Answer

    1/3

    Incorrect Answer
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    Explanation:

    Explanation :
    Total no of balls = 6+ 4 = 10
    3 balls drawn = 10C3 =(10×9×8)/(3×2×1) =120
    one ball is red and other 2 are white = 4C1×6C2    
    4C1×6C2 =(4×6×5)/(1×2)= 60
    P = 60/120 = 1/2

    By: Sandeep Dubey
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