In the given question a series of small letters which follows a pattern where some letters are missing is given.Find the missing letters so that a proper sequence of letters are formed.
ab _ _ _ b _ bbaa _
a)abaab b)abbab c)baaab d)babba
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Solution
Answer :
Our full pattern from given option can be
a b b a a b a b b a a b
Here after single a double b comes and after double a single b came .