Which letter cluster will complete the given series?

Solution

The pattern followed here is: In each letter cluster, the 1st letter is the 4th succeeding letter of the 1st letter of the previous letter cluster, the 2nd letter is the 6 th preceding letter of the 2nd letter of the previous letter cluster, the 3rd letter is the immediate succeeding letter of the 3rd letter of the previous letter cluster and the 4 th letter is the 3rd preceding letter of the 4th letter of the previous letter cluster as per the English alphabetical series. G + 4 = K, K + 4 = O, O + 4 = S, S + 4 = W, W + 4 = A Z - 6 = T, T - 6 = N, N - 6 = H, H - 6 = B, B - 6 = V D + 1 = E, E + 1 = F, F + 1 = G, G + 1 = H, H + 1 = I K - 3 = H, H - 3 = E, E - 3 = B, B - 3 = Y, Y - 3 = V