New SIDBI Grade A New Batch Starts on Nov 18

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    Question

    A bag contains 18 black and 20 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

    A 4/19 Correct Answer Incorrect Answer
    B 8/19 Correct Answer Incorrect Answer
    C 3/19 Correct Answer Incorrect Answer
    D 10/19 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let number of balls = (18 + 20) = 38
    Number of white balls = 20
    P (drawing a white ball) = 20/38 = 10/19

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