Question

    Three of the following four letter-cluster-pairs are

    alike in a certain way and thus form a group. Select the pair that does NOT belong to that group. 
    A MP-NQ Correct Answer Incorrect Answer
    B EH-FI Correct Answer Incorrect Answer
    C IL-JN Correct Answer Incorrect Answer
    D JM-KN Correct Answer Incorrect Answer

    Solution

    MP-NQ = M + 1 = N, P + 1 = Q. EH-FI = E + 1 = F, H + 1 = I. IL-JN = I + 1 = J, L + 2 = N. JM-KN = J + 1 = K, M + 1 = N.

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