Analyzing Letter-Cluster Pairs
The question asks to identify the letter-cluster pair that does not follow the same pattern as the others, based on the English alphabetical order. We need to find a consistent relationship between the letters within each pair.
Identifying the Pattern
Let's assign numerical positions to the letters (A=1, B=2, ..., Z=26). We will examine the difference between the position of the first letter and the second letter within each cluster. The pattern seems to be a consistent difference of -4 positions.
Step-by-Step Analysis of Options
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Option 1: VR−QM
- V is the 22nd letter, R is the 18th letter. Difference: $22 - 18 = 4$. This means R is 4 positions *before* V. Let's write it as -4.
- Q is the 17th letter, M is the 13th letter. Difference: $17 - 13 = 4$. This means M is 4 positions *before* Q. Written as -4.
- Pattern: Both pairs have an internal difference of -4.
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Option 2: BX−VU
- B is the 2nd letter, X is the 24th letter. The difference $2 - 24 = -22$. In reverse alphabetical order, this is equivalent to -4 (B -> A -> Z -> Y -> X).
- V is the 22nd letter, U is the 21st letter. Difference: $22 - 21 = 1$. This means U is 1 position *before* V. Written as -1.
- Pattern: The internal differences are -4 and -1. These are not consistent.
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Option 3: UQ−PL
- U is the 21st letter, Q is the 17th letter. Difference: $21 - 17 = 4$. This means Q is 4 positions *before* U. Written as -4.
- P is the 16th letter, L is the 12th letter. Difference: $16 - 12 = 4$. This means L is 4 positions *before* P. Written as -4.
- Pattern: Both pairs have an internal difference of -4.
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Option 4: CY−XT
- C is the 3rd letter, Y is the 25th letter. The difference $3 - 25 = -22$. In reverse alphabetical order, this is equivalent to -4 (C -> B -> A -> Z -> Y).
- X is the 24th letter, T is the 20th letter. Difference: $24 - 20 = 4$. This means T is 4 positions *before* X. Written as -4.
- Pattern: Both pairs have an internal difference of -4.
Conclusion
Options 1, 3, and 4 follow the pattern where the second letter in each pair is 4 positions before the first letter (a difference of -4). Option 2 (BX−VU) does not follow this pattern consistently, as the differences are -4 and -1.
Therefore, the letter-cluster pair that does not belong to the group is BX−VU.