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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 following questions, three sequence of alphabets/numerals are provided which correspond to each other in some way. Find out alphabets/numerals that come in the blank places.Choose the correct option

C _ B _ D _ A _ B B D D 2 _ _ 4 _ 3 4 _ ? ? ? ? _ a _ c b a _ d _ _ _ _

Option:
A. 2, 2, 1, 1
B. 2, 2, 3, 3
C. 3, 3, 4, 4
D. 3, 3, 1, 1
Answer: D . 3, 3, 1, 1

Justification:

Clearly, 2 corresponds to C and 4 corresponds to A.
So, 1 and 3 corresponds to B and D.
Thus, the missing sequence is 1, 1, 3, 3  or 3, 3, 1, 1.

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