In the following question, a series is given with one term missing. Choose the correct term to complete the sequence.
AZBY, CXDW, EVFU, ?
Show answer & explanation
Correct answer: A
Explanation
Analyze the pattern of each letter position in the series:
• 1st letter: A (+2) → C (+2) → E (+2) → G
• 2nd letter: Z (−2) → X (−2) → V (−2) → T
• 3rd letter: B (+2) → D (+2) → F (+2) → H
• 4th letter: Y (−2) → W (−2) → U (−2) → S
(Alternatively, each term consists of two consecutive pairs of opposite letters: A-Z & B-Y, C-X & D-W, E-V & F-U, and next is G-T & H-S.)
Therefore, the missing term is GTHS.