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    Question

    Bag 1: 2 red, 3 blue. Bag 2: 4 red, 1 blue. One ball

    from Bag 1 is put into Bag 2, then one is drawn from Bag 2. Find probability it’s red.
    A 10/11 Correct Answer Incorrect Answer
    B 12/13 Correct Answer Incorrect Answer
    C 11/15 Correct Answer Incorrect Answer
    D 21/20 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Case 1: Red transferred → P=2/5×(5/6)=10/30 Case 2: Blue transferred → P=3/5×(4/6)=12/30 Total = 22/30 = 11/15.

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