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

  1. A. WD (Correct answer)
  2. B. DW
  3. C. UW
  4. 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