Direction: In each of the following questions, 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 a _ b _ b _ a _ b
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- abaab
- aabba
- bbabb
- abbab
Correct Option: C
The given letter series is in below pattern.
a b b
So the letter series will be as below.
a b b/ a b b/ a b b/ a b b
