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    Question

    From a bag containing 12 white and 15 yellow ribbons,

    find the probability of picking 2 ribbons of each type at random.
    A 77/195 Correct Answer Incorrect Answer
    B 57/195 Correct Answer Incorrect Answer
    C 79/195 Correct Answer Incorrect Answer
    D 67/195 Correct Answer Incorrect Answer

    Solution

    Required probability = (12C2 × 15C2)/27C4 = 77/195

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