aab _ aa _ bbb _ aaa _ bbba

by AdminX

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

aab _ aa _ bbb _ aaa _ bbba

A. abba
B. baab
C. aaab
D. abab

Answer & Solution

Answer: Option B

The series is,
aabb / aaabbb / aaaabbbb / a.
Thus letters are repeated twice, then thrice then four times and so on.

aab _ aa _ bbb _ aaa _ bbba

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