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Letter series type of questions usually consists of a series of small letters which follow a certain pattern. However, some letters are missing from the series. These missing letters are then given in a proper sequence as one of the alternatives. The candidate is requitred to choose this alternative as the answer.

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.

ab _ aa _ caab _ c _ abb _ c

Option:
A. bbcaa
B. bcbca
C. cabac
D. cbbac
Answer: D . cbbac

Justification:

The series is abc / aabc / aabbc / aabbcc.
First all the letters occur once, then a occurs twice, then both a and b occur twice and finally all the three letters appear twice.

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