This 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. It required to choose this alternative as the answer.

1)

_c _ bd _ cbcda _ a _ db _ a


A) adabcd

B) cdbbca

C) daabbc

D) bdbcba

Answer:

Option A

Explanation:

The series is acdb/dacb/cdab/acdb/da.

The third letter in each sequence becomes the first letter in the following sequence.

Hence the answer is (a).