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Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which pair does not belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter cluster.)
FK-IN
DI-GL
LP-NR
QV-TY
LP-NR
Find the alphabetical position difference between the letters of each cluster. Three pairs follow the exact same forward/backward shift pattern, while one pair differs.
Find the alphabetical position difference between the letters of each cluster. Three pairs follow the exact same forward/backward shift pattern, while one pair differs.
Analyze Option A (FK - IN)
F is 6th letter, K is 11th letter (6 + 5 = 11). I is 9th letter, N is 14th letter (9 + 5 = 14). Difference is +5 for both pairs.
Analyze Option B (DI - GL)
D is 4th letter, I is 9th letter (4 + 5 = 9). G is 7th letter, L is 12th letter (7 + 5 = 12). Difference is +5 for both pairs.
Analyze Option C (LP - NR)
L is 12th letter, P is 16th letter (12 + 4 = 16). N is 14th letter, R is 18th letter (14 + 4 = 18). Difference is +4, which violates the +5 pattern.
Analyze Option D (QV - TY)
Q is 17th letter, V is 22nd letter (17 + 5 = 22). T is 20th letter, Y is 25th letter (20 + 5 = 25). Difference is +5 for both pairs.
A: FK-IN follows the standard +5 alphabetical gap rule. B: DI-GL follows the standard +5 alphabetical gap rule. D: QV-TY follows the standard +5 alphabetical gap rule.
C is correct because LP-NR has an alphabetical difference of +4 between its letters, whereas all other options have a difference of +5.
When checking letter clusters, always convert letters to their numerical positions (A=1 to Z=26) first to quickly spot arithmetic patterns.