SSC CHSL 2025 PYQ — Question 27

SSC CHSL - 15 Nov 2025 - Shift 2 • Reasoning • Q27

Find the odd sequence.

Show answer & explanation

Correct answer: D

Explanation

Letter pattern in each sequence:

(1) A → C → E → G

Difference: +2, +2, +2 (consistent)

(2) B → D → F → H

Difference: +2, +2, +2 (consistent)

(3) C → E → G → I

Difference: +2, +2, +2 (consistent)

(4) D → F → H → K

Difference: +2, +2, +3 (inconsistent)

All sequences except D have a consistent difference of +2 between letters.

Therefore, option (4) is the correct answer.