In following number series, two terms have been put within brackets. Choose the appropriate option - 85,74,63,52,x

A. 41

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. - 1, 2, 3, 6, 9, 18, , 54

B. 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. - 4, 23, 60, 121,

A. 212

In following number series, two terms have been put within brackets. Choose the appropriate option - 2 , 5 , 9 , 19 , 37 , x

B. 75