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    Which of the given letter-number clusters will replace the question mark (?) in the following series to make it logically complete? IHD 78, EDZ 87,
    Question

    Which of the given letter-number clusters will replace the question mark (?) in the following series to make it logically complete?
    IHD 78, EDZ 87, AZV 96, WVR 105, ?

    A.

    SRN 114

    B.

    SSM 114

    C.

    SQM 113

    D.

    SBL 113

    Correct option is A

    Given: IHD 78, EDZ 87, AZV 96, WVR 105, ?
    Logic: Letters are decreasing - 4 and number is increasing + 9 place.
    For, letter
    I - 4 = E, E - 4 = A, A - 4 = W, W - 4 = S
    H - 4 = D, D - 4 = Z, Z - 4 = V, V - 4 = R
    D - 4 = Z, Z - 4 = V, V - 4 = R, R - 4 = N
    For, number
    78 + 9 = 87, 87 + 9 = 96, 96 + 9 = 105, 105 + 9 = 114
    So, the missing term is SRN 114.
    Thus, correct option is (a).

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