In following questions, three sequence of alphabets/numerals are provided which correspond to each other in some way. Find out alphabets/numerals that come in the blank places.Choose the correct option - _ A D A C B _ _ B D C C 1 3 _ _ 1 2 4 2 _ _ _ _ a _ _ b _ _ c d ? ? ? ?

D. D, C, A, A

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. - 5, 6, 7, 8, 10, 11, 14,

A. 15

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - AZ, BY, CX, ?

E. DW

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. - 21, 25, 33, 49, 81,

A. 145

In following questions, one term in number series is incorrect. - Find out the incorrect number 5, 10, 40, 80, 320, 550, 2560

C. 550