In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - b _ abbc _ bbca _ bcabb _ ab

C. CABC

In following number series, two terms have been put within brackets. Choose the appropriate option - 2,6,12,20,30,42,56,x

D. 72

In following questions, one term in number series is incorrect. - Find out the incorrect number 3, 10, 27, 4, 16, 64, 5, 25, 125

C. 10

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

E. DW

In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 3, 7, 15, 27, 63, 127

C. 27