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

C. 550

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

D. CBBAC

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 _ B A C _ D _ B C D C _ 3 _ 2 _ 1 _ 4 ? ? ? ? d c _ _ b a c b _ _ _ _

B. 1, 4, 3, 4

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - BEH, KNQ, TWZ, ?

B. CFI

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. - 2 / √5, 3 / 5, 4 / 5√5, 5 / 25,(.....)

B. 6 / 25?5