In following number series, two terms have been put within brackets. Choose the appropriate option - 18 21 25 18 29 33 18What numbers should come next ?

D. 37 41

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - b, e, d, f, ?, h, j, ?, l

A. I, M

In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 5, 9, 16, 25, 37, 49

B. 15

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

C. JQ

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 _ bc _ c _ ba _ c

C. CAAB