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 ten letters of the given alphabet are written in the reverse order, which of the following letters will be the seventh to the left of the twelfth letter from the right end ?

Answer: B. C

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