In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.
aa _ aaa _ aaaa _ aaaa _ b
Option:
A. baaa
B. bbaa
C. bbbb
D. bbba
Answer: D . bbba
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Justification:
The series is aab / aaab / aaaab / aaaaab.
Thus, the number of a`s is increasing by one in the successive sequence.
