Which of the following letter clusters will replace the question mark (?) in the given series to make it logically complete?
CXW, EVU, GTS, IRQ, ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. KPO.
C + 2 = E, E + 2 = G, G + 2 = I, I + 2 = K
X - 2 = V, V - 2 = T, T - 2 = R, R - 2 = P
W - 2 = U, U - 2 = S, S - 2 = Q, Q - 2 = O