In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 31, 29, 24, 22, 17, . . . What number should come next?

A. 15

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. - 20, 19, 17, x , 10, 5

C. 14

In following number series, two terms have been put within brackets. Choose the appropriate option - Which is the number that comes next in the sequence :0, 6, 24, 60, 120, 210 ?

C. 336

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - ac _ cab _ baca _ aba _ acac

A. AACB

In following questions, one term in number series is incorrect. - Find out the incorrect number 3, 4, 10, 32, 136, 685, 4116

B. 32