Question
Select the letter cluster from among the given option
that can replace the question mark (?) in the following series. GPD, JTA, MXX, PBU, ?Solution
G + 3 = J, J + 3 = M, M + 3 = P, P + 3 = S P + 4 = T, T + 4 = X, X + 4 = B, B + 4 = F D - 3 = A, A - 3 = X, X - 3 = U, U - 3 = R
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