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, 7, 15, 31, 63,

C. 127

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - ab _ aa _ bbb _ aaa _ bbba

B. BAAB

In following number series, two terms have been put within brackets. Choose the appropriate option - 18 21 25 18 29 33 18What numbers should come next ?

D. 37 41

In following number series, two terms have been put within brackets. Choose the appropriate option - Find the wrong number in the series :7, 28, 63, 124, 215, 342, 511

B. 28

In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options. - 2A11, 4D13, 12G17, ?

D. 48J23