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

In following number series, two terms have been put within brackets. Choose the appropriate option - 20 20 17 17 14 14 11What numbers should come next ?

E. 11 8

In following questions, one term in number series is incorrect. - Find out the incorrect number 25, 36, 49, 81, 121, 169, 225

A. 36

In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 3, 10, 21, 64, 129, 256, 778

D. 256

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, 15, 41, 80,

D. 132