The question is:-
What is the last letter of the alphabet?
If ye observe the question carefully.
We’ll find that the literal meaning of the question is to find the ” last letter of the word ‘Alphabet’ ”
The word’s last letter is:-
ALPHABE”T” = T
The last letter of Alphabet is T
If ye look at the non-literal meaning of the question.
The required answer will be Z (A, B, C…. Y, Z)
Hope it helps! 🙂