Which letter cluster will replace the question mark (?) to complete the given series?
TUBE, SXEH, ?, QDKN, PGNQ
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. RAHK.
Given series: TUBE, SXEH, ?, QDKN, PGNQ
T - 1 = S; S - 1 = R; R - 1 = Q; Q - 1 = P
U + 3 = X; X + 3 = A; A + 3 = D; D + 3 = G
B + 3 = E; E + 3 = H; H + 3 = K; K + 3 = N
W + 3 = H; H + 3 = K; K + 3 = N; N + 3 = Q