Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
UCGK, YGKO, CKOS, GOSW, ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. KSWA.
Given series: UCGK, YGKO, CKOS, GOSW, ?
U + 4 = Y, Y + 4 = C, C + 4 = G, G + 4 = K
C + 4 = G, G + 4 = K, K + 4 = O, O + 4 = S
G + 4 = K, K + 4 = O, O + 4 = S, S + 4 = W
K + 4 = O, O + 4 = S, S + 4 = W, W + 4 = A