Which of the following letter-clusters will replace the question mark (?) in the given series to make it logically complete?
YAK, CEO, GIS, KMW, ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2, i.e., OQA.
Y + 4 = C, C + 4 = G, G + 4 = K, K + 4 = O
A + 4 = E, E + 4 = I, I + 4 = M, M + 4 = Q
K + 4 = O, O + 4 = S, S + 4 = W, W + 4 = A