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Which of the following options should come in place of the question mark (?) in the given series based on the English alphabetical order? GJN, ILP, KNR, MPT,?
ORV
OVR
RVO
ROV
ORV
Look at the positional differences between consecutive letters across each position: +2, +2, +2 for the first letter; +2, +2, +2 for the second; +2, +2, +2 for the third.
Look at the positional differences between consecutive letters across each position: +2, +2, +2 for the first letter; +2, +2, +2 for the second; +2, +2, +2 for the third.
Analyze First Letters
G (7), I (9), K (11), M (13). Each increases by +2. The next letter is M + 2 = O (15).
Analyze Second Letters
J (10), L (12), N (14), P (16). Each increases by +2. The next letter is P + 2 = R (18).
Analyze Third Letters
N (14), P (16), R (18), T (20). Each increases by +2. The next letter is T + 2 = V (22).
B: OVR has the correct letters in wrong order. C: RVO reverses the sequence entirely. D: ROV mixes up second and third positions.
A is correct because applying a consistent +2 shift to each letter position in MPT yields ORV.
For multi-letter cluster series, always decouple the terms and track each letter's index independently from left to right.