Classification – Odd one out (alphabetic jumps) Each string consists of 3 letters. In three strings, the jumps are +2 then +3 in alphabet positions; in one string, the second jump deviates. Identify the deviating string.
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AHJM
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BOQT
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CBDG
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DVXZ
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ENone of these
Answer
Correct Answer: VXZ
Explanation
Introduction / Context:Letter-series classification problems encode position jumps (e.g., +2, +3). Recognizing the numeric pattern behind letter steps converts a verbal puzzle into a simple arithmetic check on alphabet indices (A=1 … Z=26).
Given Data / Assumptions:
- HJM, OQT, BDG, VXZ
- Indexing: A=1, B=2, …, Z=26
Concept / Approach:Compute successive jumps: second − first, third − second. The intended pattern is +2 then +3 for most strings.
Step-by-Step Solution:H(8)→J(10)=+2; J(10)→M(13)=+3 → fits.O(15)→Q(17)=+2; Q(17)→T(20)=+3 → fits.B(2)→D(4)=+2; D(4)→G(7)=+3 → fits.V(22)→X(24)=+2; X(24)→Z(26)=+2 → deviates (not +3).
Verification / Alternative check:Any reindexing (e.g., A=0) preserves the relative difference property; the single departure persists for VXZ.
Why Other Options Are Wrong:
- HJM, OQT, BDG → all follow +2 then +3.
- None of these → there is one clear deviation (VXZ).
Common Pitfalls:Counting letters rather than positions (forgetting that the jump is about indices, not “letters in between”).
Final Answer:VXZ