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    Question

    Select the letter-pair that can replace the question

    mark (?) in the following series. CT, EW, GZ, IC, ?
    A LG Correct Answer Incorrect Answer
    B KF Correct Answer Incorrect Answer
    C KH Correct Answer Incorrect Answer
    D MH Correct Answer Incorrect Answer

    Solution

    C + 2 = E, E + 2 = G, G + 2 = I, I + 2 = K T + 3 = W, W + 3 = Z, Z + 3 = C, C + 3 = F

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