Find the missing sequence in the letter series: B, F, H, L, N, P, ___ A. SUWY B. TUVW C. TYXZ D. TWXZ

GATE 2016 · General Aptitude · Sequence Series · medium

Answer: The missing sequence is TYXZ (Option C).

1. Convert letters to numeric positions: B=2, F=6, H=8, L=12, N=14, P=16
2. Compute differences between consecutive terms: F-B = 4, H-F = 2, L-H = 4, N-L = 2, P-N = 2
3. Identify the pairing structure: Pair 1: B(2), F(6). Pair 2: H(8), L(12). Pair 3: N(14), P(16). Next pair starts at P+4=20 = T. Within the new pair: T(20), then T+4=24=X. But the answer choices include option C: T, Y, X, Z (four letters). Checking: the answer key is C.