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    Question

    From the given options, select the alphanumeric group

    which will come in place of the question mark (?) in the following series.  3O, 5M, 8K, 13I, ?
    A 20F Correct Answer Incorrect Answer
    B 20G Correct Answer Incorrect Answer
    C 22G Correct Answer Incorrect Answer
    D 18G Correct Answer Incorrect Answer

    Solution

    First term = 3 + 2 = 5, 5 +  3 = 8, 8 + 5 = 13, 13 + 7 = 20. Second term = O - 2 = M, M - 2 = K, K - 2 = I, I - 2 = G

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