Question

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

    8       12       39       ?        

    180        216
    A 65 Correct Answer Incorrect Answer
    B 52 Correct Answer Incorrect Answer
    C 55 Correct Answer Incorrect Answer
    D 59 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    8 + 22 = 12 12 + 33 = 39 39 + 42 = 55 55 + 53 = 180 180 + 62 = 216

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