SSC CGL (Prelims) General: Series questions with solutions

Q1. What comes next? AB, FG, KL, PQ, ?

1. UV
2. VW
3. UW
4. VT

Answer: UV

The pairs are AB, FG, KL, PQ. The first letters progress by 5 positions: A, F, K, P, U. So the next pair starts with U and continues with V.