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 _ ac _ cc _ cb _ ab _ ac

D. AABBA

In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 3, 4, 7, 8, 11, 12, . . . What number should come next ?

D. 15

In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 2, 6, 18, 54, . . .What number should come next?

C. 162

In following alphabet series , one term missing as shown by question mark . Choose missing term from options. - Z, L, X, J, V, H, T, F, ?, ?

A. R, D

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