What is three digit number whose number consists of distinct odd numbers is divisible by 9?

135 , or 153, or 315. or 351. or 531, or 513.

Id the digits of a given number sim to '9' , then it will divide / common factor of '9'.

Hence

513 = 5 + 3 + 1 = 9

So 531 / 9 = 57