A series is given with one term missing. Choose the correct alternative from…

2025

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. JI, LK, NM, ?

  1. A.

    ST

  2. B.

    OP

  3. C.

    QR

  4. D.

    PO

Attempted by 4344 students.

Show answer & explanation

Correct answer: D

Key insight: both the first and the second letters advance by two positions in the alphabet each term.

  • First letters: J → L → N → P (positions 10 → 12 → 14 → 16), each step +2.

  • Second letters: I → K → M → O (positions 9 → 11 → 13 → 15), each step +2.

  • Combine the next letters to get the missing term: P (first) and O (second) → PO.

Answer: PO

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