Find the odd one from the following group: A. W, E, K, O B. I, Q, W, A C. F, N, T, X D. N, V, B, D

GATE 2014 · General Aptitude · Odd One Out · medium

Answer: D. N, V, B, D

1. Compute forward gaps for each group: A: W(23)->E(5): (5-23+26)=8; E(5)->K(11): 6; K(11)->O(15): 4. Gaps: 8,6,4. B: I(9)->Q(17): 8; Q(17)->W(23): 6; W(23)->A(1): (1-23+26)=4. Gaps: 8,6,4. C: F(6)->N(14): 8; N(14)->T(20): 6; T(20)->X(24): 4. Gaps: 8,6,4. D: N(14)->V(22): 8; V(22)->B(2): (2-22+26)=6; B(2)->D(4): 2. Gaps: 8,6,2.
2. Identify the odd one out: The consistent pattern is gaps of 8, 6, 4. Group D (N,V,B,D) has a last gap of 2 instead of 4, breaking the pattern.