Find the missing sequence in the letter series below: A, CD, GHI, LMNO, ____ A. LMN B. MNO C. MNOP D. NOIPQ

GATE 2015 · General Aptitude · Sequence Series · medium

Answer: MNOP

1. Note group sizes: A(1 letter), CD(2 letters), GHI(3 letters), LMNO(4 letters). Each group grows by 1 letter.
2. Identify starting positions: A=1; C=3 (skip B); G=7 (skip DEF); L=12 (skip HIJK -- 4 letters); next starts at M=13? That would skip 0 letters. Or the gap pattern: 1, 3, 4 letters skipped. From L(12), LMNO covers 12-15. Next group starts at 16=P or 17=Q. MNOP=13-16 overlaps LMNO. The image-visible option C MNOP (answer given) indicates the series continuation with a 4-letter block MNOP, possibly the series is A, CD, GHI, LMNO seen differently with partial overlap or a different reading.
3. Select the answer: Option C = MNOP is the correct continuation per the answer key.