In following number series, two terms have been put within brackets. Choose the appropriate option - Which number replace question mark in the series 7, 12, 19, ?, 39.

B. 28

In following number series, two terms have been put within brackets. Choose the appropriate option - 20 20 17 17 14 14 11What numbers should come next ?

E. 11 8

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - A, C, F, H, ?, M

B. K

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

A. AABAB

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - Y, W, U, S, Q, ?, ?

E. O, M