This question is based on the general English alphabet: 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 alphabets are arranged in reverse order, which will be 8th letter to the left of the 7th letter counting form the right end?

O

If we interchange the positions:

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

8th letter to the left of the 7th letter counting form the right end - 15th letter from right i.e. O