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. - 121, 225, 361,

C. 529

In following questions, one term in number series is incorrect. - Find out the incorrect number 6, 14, 30, 64, 126

C. 64

In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 40, 40, 47, 47, 54, . . . What number should come next?

C. 54

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