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    Question

    A bag contains 6 purple, 15 green and 9 red balls. Two

    balls are randomly drawn from the bag, what is the probability that a green and a red ball are drawn?
    A 4/27 Correct Answer Incorrect Answer
    B 5/22 Correct Answer Incorrect Answer
    C 9/29 Correct Answer Incorrect Answer
    D 7/30 Correct Answer Incorrect Answer
    E 4/27 Correct Answer Incorrect Answer

    Solution

    The probability that a green and a red ball are drawn = (15C1 ├Ч 9C1) / 30C2 = (15 ├Ч 9) / 435 = 135/435 = 9/29

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