Which letter-cluster will replace the question mark (?) and complete the given series?
HERO, GISM, ?, EQUI, DUVG
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1, i.e., FMTK.
H - 1 = G, G - 1 = F, F - 1 = E, E - 1 = D
E + 4 = I, I + 4 = M, M + 4 = Q, Q + 4 = U
R + 1 = S, S + 1 = T, T + 1 = U, U + 1 = V`
O - 2 = M, M - 2 = K, K - 2 = I, I - 2 = K