If the alphabets are written in the reverse order and every alternate letter starting with Y is dropped, which letter will be exactly in the middle of the remaining letter of the alphabets?

N

The order of letters are as follows:

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

Reversing the letters:

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 

Dropped letters:

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

Remaining letters:

Z X V T R P N L J H F D B

The letter in the middle of the series: "N"