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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? FCF 47 HEH 58 JG
    Question

    Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
    FCF 47 HEH 58 JGJ 69 LIL 80 ?

    A.

    NKN 90

    B.

    NKN 91

    C.

    MJM 90

    D.

    MLM 91

    Correct option is B

    Information Given:
    Series: FCF 47, HEH 58, JGJ 69, LIL 80, ?​
    Logic: Letters follow +2 pattern; numbers increase by +11.
    Step-by-step:
    First letters: F → H → J → L → N
    Second letters: C → E → G → I → K
    Third letters: F → H → J → L → N
    Numbers:
    47 → 58 → 69 → 80 → 91 (+11 each)
    Next term → NKN 91
    Final Answer:
    NKN 91
    Final Correct Option:
    (B)

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