In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - _ cb _ ca _ bacb _ ca _ bac _ d

C. ADDDDB

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - b _ abbc _ bbca _ bcabb _ ab

C. CABC

In following number series, two terms have been put within brackets. Choose the appropriate option - 2,6,12,20,30,42,56,x

D. 72

Choose the term which will continue the following series :
P 3 C, R 5 F, T 8 I, V 12 L, ?

C. X 17 O

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, 5, 8,

C. 13