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    Question

    A bag has 5 red, 4 green, 3 blue balls. Three are drawn

    at random. Find probability all are different colors.
    A 3/11 Correct Answer Incorrect Answer
    B 2/13 Correct Answer Incorrect Answer
    C 7/17 Correct Answer Incorrect Answer
    D 5/11 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Total ways = C(12,3) Favorable = C(5,1)C(4,1)C(3,1)=60 P = 60 / 220 = 3/11

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