A 3-digit number has a digit of 15, and is divisible by 35. Find the 3-digit number.
I assume that you mean the sum of the digits = 15 and is divisible by 35. There is only one number that meets the conditions. That number is = 735.
7 + 3+ 5 = 15
735 mod 35 =0, or:
735 / 35 = 21.
