Question

Which sequence of letters when placed in the blanks one after the other will complete the given letter series ?

_ a a b b _ a _ a b _ b

• A. b b a a
• B. b a b a
• C. b a a b
• D. a b a b

Answer 1

Answer: (D)

a b a b

Option (D) is the correct answer.
Explanation
Let's distribute the letter series in equal parts
_ a a /b b _ /a _ a/ b _ b
The following series can be formed
a a a /b b b /a a a/ b b b

In the above series the terms aaa and bbb are repeated alternatively.
Hence a b a b is correct answer.