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    Question

    Which letter cluster will replace the question mark [?]

    in the following series? AEQ, XIN, UMK, RQH, OUE, ?
    A LYB Correct Answer Incorrect Answer
    B MWC Correct Answer Incorrect Answer
    C LBY Correct Answer Incorrect Answer
    D OPU Correct Answer Incorrect Answer

    Solution

    The first letter and the third letter in each letter cluster are replaced by their third preceding letter, as per English alphabetical order. The second letter in each letter cluster is replaced by fourth succeeding letter, as per English alphabetical order. So, A - 3 = X, X - 3 = U, U - 3 = R, R - 3 = O, O- 3 = L E + 4 = I, I + 4 = M, M + 4 = Q, Q + 4 = U, U + 4 = Y Q - 3 = N, N - 3 = K, K - 3 = H, H - 3 = E, E - 3 = B So, 'LYB' will replace the question mark in the given series.

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