Which letter cluster will replace the question mark (?) to complete the given series?
CIEO, JAAU, QSWA, XKSG,?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2. i.e. ECOM.
The series follows this pattern:
C + 7 = J, J + 7 = Q, Q + 7 = X, X + 7 = E
I - 8 = A, A - 8 = S, S - 8 = K, K - 8 = C
E - 4 = A, A - 4 = W, W - 4 = S, S - 4 = O
O + 6 = U, U + 6 = A, A + 6 = G, G + 6 = M