In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 2, 6, 18, 54, . . .What number should come next?

C. 162

In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 2, 4, 8, 16, 32, 64, 96

D. 96

In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 3, 4, 7, 8, 11, 12, . . . What number should come next ?

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

B. 36

In following number series, two terms have been put within brackets. Choose the appropriate option - Which number replace question mark in the series 7, 12, 19, ?, 39.

B. 28