In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 5, 5, 9, 7, 11, 11, 15, 12, 17

B. 12

In following questions, three sequence of alphabets/numerals are provided which correspond to each other in some way. Find out alphabets/numerals that come in the blank places.Choose the correct option - C B _ _ D _ B A B C C B _  _ 1 2 4 3  _ _ ? ? ? ? a _ a b _ c _ b _ _ _ _

C. 3, 1, 1, 3

In following number series, two terms have been put within brackets. Choose the appropriate option - Look at this series: 1000, 200, 40, . . . What number should come next?

A. 8

In following number series, two terms have been put within brackets. Choose the appropriate option - 2 , 4 , 12 , 48 , 240 , x

C. 1440

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. - 3, 6, 18, 72,

D. 360