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    Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?ICV 16, LGS 5, OKP
    Question

    Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
    ICV 16, LGS 5, OKP -6, ROM -17, ?

    A.

    SJD -21

    B.

    UHT -21

    C.

    USJ -28

    D.

    JUD -20

    Correct option is C

    Given: ICV 16, LGS 5, OKP -6, ROM -17, ?
    Logic: 1st letter + 3, 2nd letter + 4, 3rd letter - 3 and number is decreasing - 11 place.
    For, 1st letter
    I + 3 = L, L + 3 = O, O + 3 = R, R + 3 = U
    For, 2nd letter
    C + 4 = G, G + 4 = K, K + 4 = O, O + 4 = S
    For, 3rd letter
    V - 3 = S, S - 3 = P, P - 3 = M, M - 3 = J
    For, number
    16 - 11 = 5, 5 - 11 = -6, -6 - 11 = -17, -17 - 11 = -28
    So, the missing term is USJ -28.
    Thus, correct option is (c).

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