In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options. - AB, BA, ABC, CBA, ABCD, ?

E. DCBA

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

B. K

In following questions, one term in number series is incorrect. - Find out the incorrect number 25, 36, 49, 81, 121, 169, 225

A. 36