Find the missing term: ZA, YB, XC, , VE, UF
Numerical & Reasoning Ability ·Previously asked in JKSSB Constable (Executive / Armed / IRP / SDRF) 2016
View the full solved paper: J&K Police Constable 2016 - Set A
Question
Find the missing term:
ZA, YB, XC, , VE, UF
- A. WD (Correct answer)
- B. DW
- C. UW
- D. WU
Correct Answer
Option A — WD
Detailed Solution & Explanation
The correct answer is WD.
Key Points
- Look at the two letters separately. The first letters run Z, Y, X, __, V, U — descending by one.
- The second letters run A, B, C, __, E, F — ascending by one.
- The missing term therefore pairs W with D, giving WD.
Additional Information
- Two-letter series almost always need the positions treated as independent sequences; splitting them is the first move.
- Note the neat structure here: each pair's positions add to 27 (Z=26 + A=1, Y=25 + B=2, and so on), which is a useful cross-check.
- Writing the alphabet with position numbers before starting the reasoning section makes this arithmetic instead of recall.
Topics covered: Letter Series Reasoning