In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 7, 10, 8, 11, 9, 12, . . . What number should come next?

B. 10

In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 80, 10, 70, 15, 60, . . . What number should come next?

A. 20

In following questions, one term in number series is incorrect. - Find out the incorrect number 8, 13, 21, 32, 47, 63, 83

C. 47

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. - In the Series 3, 9, 15, … what will be the 21st term ?

C. 123

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. - 1, 4, 9, 16, 25, x

B. 36