In following questions, one term in number series is incorrect. - Find out the incorrect number 3, 7, 15, 39, 63, 127, 255, 511

B. 39

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. - 90, 180, 12, 50, 100, 200, , 3, 50, 4, 25, 2, 6, 30, 3

A. 150

In following number series, two terms have been put within brackets. Choose the appropriate option - 1,2,3,6,9,18, x ,54

D. 27

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, 3, 5, 7, 11, x, 17

B. 13

In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 22, 21, 23, 22, 24, 23, . . . What number should come next?

C. 25