Choose the odd one out.
2023
Choose the odd one out.
Answer: B. FL18 — ConceptIn letter–number classification, first convert each letter to its alphabet position (A = 1, B = 2, …, Z = 26). Then test the same arithmetic relation…
- A.
NH6
- B.
FL18
- C.
XQ7
- D.
More than one of the above
- E.
None of the above
Show answer & explanation
Correct answer: B
Concept
In letter–number classification, first convert each letter to its alphabet position (A = 1, B = 2, …, Z = 26).
Then test the same arithmetic relation for every group; the group that alone breaks the common relation is the odd one out.
Application
For NH6, N = 14 and H = 8. The absolute difference is |14 − 8| = 6, which is the displayed number.
For FL18, F = 6 and L = 12. The absolute difference is |6 − 12| = 6, while the displayed number is 18; 18 is instead 6 + 12.
For XQ7, X = 24 and Q = 17. The absolute difference is |24 − 17| = 7, which is the displayed number.
Cross-check
NH6 and XQ7 follow number = absolute difference of the two letter positions. FL18 uses the sum of the positions instead, so FL18 is the odd one out.