Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
IBTW, JCSV, ?, LEQT
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. KDRU.
Given series: IBTW, JCSV, ?, LEQT
I + 1 = J; J + 1 = K; K + 1 = L
B + 1 = C; C + 1 = D; D + 1 = E
T - 1 = S; S - 1= R; R - 1 = Q
W - 1 = V; V - 1 = U; U - 1 = T