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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.)
LO-MP
SW-UY
TW-UX
CF-DG
SW-UY
Look at the alphabetical difference between the first and second letters of each cluster. LO (+3), MP (+1); SW (+4), UY (+2); TW (+3), UX (+1); CF (+3), DG (+1). SW-UY follows a different pattern (+4 and +2) instead of (+3 and +1).
Look at the alphabetical difference between the first and second letters of each cluster. LO (+3), MP (+1); SW (+4), UY (+2); TW (+3), UX (+1); CF (+3), DG (+1). SW-UY follows a different pattern (+4 and +2) instead of (+3 and +1).
Analyze Option A (LO-MP)
L (+3) = O, and M (+1) = P. The difference pattern is (+3, +1).
Analyze Option B (SW-UY)
S (+4) = W, and U (+2) = Y. The difference pattern is (+4, +2), which is different from the others.
Analyze Options C and D (TW-UX and CF-DG)
For TW-UX: T (+3) = W, U (+1) = X. For CF-DG: C (+3) = F, D (+1) = G. Both follow the (+3, +1) pattern.
A: LO-MP follows the standard +3, +1 positional difference rule. C: TW-UX follows the standard +3, +1 positional difference rule. D: CF-DG follows the standard +3, +1 positional difference rule.
B is correct because SW-UY follows a different letter position jump pattern (+4, +2) compared to the (+3, +1) pattern followed by all other options.
When analyzing letter pairs or clusters, always check the positional difference (forward or backward shift) between consecutive letters first.