Direction: In the following questions, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
- 
					 aa__a__b__abaa__
- 
                        - abab
- baab
- baba
- abba
 
Correct Option: B
The pattern of given letter series is :-
aa b
Using the same pattern, we will get complete letter series.
aa b/ a a b/ a ab/ aa b
 
	