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    Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which
    Question

    Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter cluster)​

    A.

    PQ - NO

    B.

    KL - IJ

    C.

    GH - EF

    D.

    MH - IP

    Correct option is D

    Logic:
    Find the relation between the first and second cluster in each pair based on alphabetical backward difference.

    Facts & Explanation (Operation-wise):
    PQ – NO: P −2 = N, Q −2 = O
    KL – IJ: K −2 = I, L −2 = J
    GH – EF: G −2 = E, H −2 = F
    MH – IP: M −4 = I, H −7 = A (unequal / inconsistent difference)

    Thus, first three pairs follow the same −2 pattern, while the last one breaks it.
    Final Answer: MH – IP
    Final Correct Option: (d)

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