What should come in place of the question mark (?) to complete the following letter-cluster series? BDC, EGF, HJI, ?
A.KLN
B.KLM
C.LMN
D.KML✓ Correct
Explanation
Pattern: each cluster starts 3 letters after the previous start (B,E,H,K). Middle letter is 2 ahead of first (D,G,J,M). Last letter is 1 behind middle (C,F,I,L). So the next cluster is KML.
💡 Practice unlimited SSC CHSL PYQs + AI-tracked progress on each topic. Sign up free →