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 every even letter beginning from B is replaced by odd number biginning with 3, which letter/number will be the third to the right of the tenth number/letter counting from your right ?

A. M
B. S
C. 11
D. 23
E. None of these
Answer: E . None of these


The new series is :
A  3  C  5  E  7  G  9  I  11  K  13  M
15  O  17  Q  19  S  21  U  23  W  25  Y  27
Counting from the right, the tenth character is Q.
The third character to the right of Q is 21.