Direction: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
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a__ __b abba__abb a__ba
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- abab
- abba
- aabb
- aaab
Correct Option: A
As per given question, the letter series is following the below pattern.
a a b b a b b a
After using the pattern the complete letter series will be as below.
a a b b a b b a / a a bb a a ba
