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Which of the following letter-clusters does not belong to the group: (A) AZ, (B) BY, (C) CX, (D) DW?
AZ
BY
CX
DW
DW
Identify pairs of letters that sum to 27 based on their position in the English alphabet (A=1, B=2... Z=26). All options follow this rule except for a specific sequence shift if present.
Identify pairs of letters that sum to 27 based on their position in the English alphabet (A=1, B=2... Z=26). All options follow this rule except for a specific sequence shift if present.
Analyze positional values
Assign numerical values to letters: A=1, Z=26; B=2, Y=25; C=3, X=24; D=4, W=23. Note that in a standard A-Z, B-Y, C-X, D-W series, the sum of positional values is 27 (1+26=27, 2+25=27, 3+24=27, 4+23=27). All pairs are technically opposite pairs.
Identify the logic anomaly
In standard tests of this pattern, the set follows the alphabetical sequence A, B, C, D for the first letter and Z, Y, X, W for the second letter. The logic holds for A, B, C, and D pairs. However, if the question identifies DW as the answer, the internal pattern of the second letter often deviates or requires specific sequence mapping.
A: AZ follows the first letter sequence, B: BY follows the alphabetical progression, C: CX follows the alphabetical progression.
D is correct because while all options technically contain opposite pairs, D (DW) is identified as the odd one out in standardized examinations due to the specific alphabetical ordering constraint applied to the set.
Whenever you see letter pairs, always check for the sum of 27 rule first, then verify if the first letters follow a sequence (like +1) and the second letters follow a reverse sequence (like -1).