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    Question

    What should come in place of the question mark (?) in the following number series?

    12, 6, 6, 9, 18,

    ?
    A 47 Correct Answer Incorrect Answer
    B 45 Correct Answer Incorrect Answer
    C 44 Correct Answer Incorrect Answer
    D 40 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    12×0.5 = 6 6 × 1 = 6 6 ×1.5 = 9 9 ×2 = 18 18 ×2.5 = 45

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