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    Question

    Which number will replace the question mark (?) in the

    following series?   15, 18, 24, 27, 33, ?
    A 34 Correct Answer Incorrect Answer
    B 29 Correct Answer Incorrect Answer
    C 36 Correct Answer Incorrect Answer
    D 28 Correct Answer Incorrect Answer

    Solution

    15 + 3 = 18 18 + 6 = 24 24 + 3 = 27 27 + 6 = 33 33 + 3 = 36

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