Correct Answer - Option 3 : b, b, b, a
1) a, b, a, b
a__ab__aaba__b__
After filling the blanks with the letters in the option given above, we get:
aaabba / abaabb
No particular pattern is repeating itself when the sequence is divided into two equal parts.
2) a, a, a, b
a__ab__aaba__b__
After filling the blanks with the letters in the option given above, we get:
aaabaa / abaabb
No particular pattern is repeating itself when the sequence is divided into two equal parts.
3) b, b, b, a
a__ab__aaba__b__
After filling the blanks with the letters in the option given above, we get:
ababba / ababba
A particular pattern is repeating itself when the sequence is divided into two equal parts.
4) b, a, b, a
a__ab__aaba__b__
After filling the blanks with the letters in the option given above, we get:
ababaa / ababba
No particular pattern is repeating itself when the sequence is divided into two equal parts.
Hence, ‘b, b, b, a’ is the correct answer.
