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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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