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    Question

    A basket contains x black balls, (x + 3) white balls and (x

    + 6) yellow balls. If probability of picking a white ball is 1/11 more than that of picking a black ball, then find the probability of picking a yellow ball.
    A 15/19 Correct Answer Incorrect Answer
    B 17/12 Correct Answer Incorrect Answer
    C 14/33 Correct Answer Incorrect Answer
    D 11/17 Correct Answer Incorrect Answer

    Solution

    ATQ,

    (x + 3 тАУ x)/(3x + 9) = 1/11

    Or, 3x + 9 = 33

    Or, x = 8

    So, desired ratio = 14/33

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