Question
Select the letter-cluster from among the given options
that can replace the question mark (?) in the following series. OA, LG, IM, FS, (?)Solution
O – 3 = L, L – 3 = I, I – 3 = F, F – 3 = C A + 6 = G, G + 6 = M, M + 6 = S, S + 6 = Y
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