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 Write the above English alphabet in reverse order. First cancel every second letter and then select that letter which divides the remaining letters of the alphabet in two equal parts. This letter is :

Answer: C. N

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

Canceling every second letter, the above series becomes
Z  X  V  T  R  P  N  L  J  H  F  D B

The middle letter is N.