SSC CGL (Prelims) Reasoning: Series questions with solutions

Q1. Select the correct option that completes the series: AZ, BY, CX, ?

1. DW
2. DU
3. DV
4. DY

Answer: DW

In the series, the first letters go A, B, C, so the next is D. The second letters go Z, Y, X, so the next is W. Hence the next term is DW.

Q2. What comes next in the sequence: E2, H4, K6, N8, ?

1. Q10
2. P10
3. R10
4. O10

Answer: Q10

The letters follow E, H, K, N, which each advance by 3 positions in the alphabet, so the next letter is Q. The numbers go 2, 4, 6, 8, so the next number is 10.