Question

    A bag contains x pink balls, (x + 2) blue balls and (x + 7)

    green balls. If probability of getting a blue ball is 1/9 more than that of getting a pink ball, then find the probability of getting a green ball.
    A 5/9 Correct Answer Incorrect Answer
    B 7/2 Correct Answer Incorrect Answer
    C 1/2 Correct Answer Incorrect Answer
    D 1/7 Correct Answer Incorrect Answer

    Solution

    ATQ,

    (x + 2 – x)/(3x + 9) = 1/9

    Or, 3x + 9 = 18

    Or, x = 3

    So, desired ratio = 10/18 = 5/9

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