Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?

a _ bbc _ aab _ cca _ bbcc

  • 1bacb
  • 2acba
  • 3abba
  • 4caba
Answer:- 1
Explanation:-

Solution:
The series is aabbcc/aabbcc/aabbcc. Thus, the pattern 'aabbcc' is repeated.

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