Explanation
39 letters in the Urdu alphabet. some books show the answer is 36, so 36 or 39 both are right (most accurate 39)
Urdu has three short vowel sounds and seven long vowel sounds.
The Urdu alphabet has 39 basic letters and 13 extra characters, 52 all together.
It is written from right to left and is closely related to the Arabic and Persian alphabets, but also contains some sounds from Sanskrit.