In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - ac _ cab _ baca _ aba _ acac

A. AACB

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - mnonopqopqrs _ _ _ _ _

C. PQRST

Which term will replace the question mark in the series :
ABD, DGK, HMS, MTB, SBL, ?

A. ZKW

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - W, V, T, S, Q, P, N, M, ?, ?

D. K, J

In following questions, one term in number series is incorrect. - Find out the incorrect number 11, 5, 20, 12, 40, 26, 74, 54

C. 40