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Discussion :: Probability

  1.  Bag contain 10 back and 20 white balls, One ball is drawn at random. What is the probability that ball is white

    2. A.

    1/3
    B.

    2/3
    C.

    1
    D.

    4/3

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    Answer : Option B

    Explanation :

    Total cases = 10 + 20 = 30
    Favourable cases = 20

    So probability = 20/30 = 2/3

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