In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - OTE, PUF, QVG, RWH, ?

D. SXI

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - DF, GJ, KM, NQ, RT, ?

D. UX

In following number series, two terms have been put within brackets. Choose the appropriate option - 4,8,16,13,7,14, ? , ?

B. 9, 18

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

B. ACBA

In following questions, one term in number series is incorrect. - Find out the incorrect number 89, 78, 86, 80, 85, 82, 83

C. 86