In this type of questions, you are given alphabets from A to Z. The position of a letter is given in the form of a puzzle. The candidate is required to find yhis letter. However, sometimes a random letter series is given and the candidate is required to find out how many times a letter satisfying the conditions specified in the question, occurs.

The following question is based on the following alphabet series.
A  B  C  D  E  F  G  H  I  J  K  L  M
N  O  P  Q  R  S  T  U  V  W  X  Y  Z

If the first and second letters interchange their positions and similarly the third and the fourth letters, the fifth and the sixth letters and so on, which letter will be the seventeenth from your right ?

A. F
B. H
C. I
D. J
E. None of these
Answer: C . I


The new alphabet series is :
B  A  D  C  F  E  H  G  J  I  L  K  N
M  P  O  R  Q  T  S  V  U  X  W  Z  Y
The seventeenth letter from the right is I.