Question 265648: My greatest digit is nine, but im smaller than 900. I'm more than a multiple of ten, and the sum of my numbers are 12. Who am I? Answer by solver91311(24713) (Show Source):
The smallest three-digit number with a high-order digit of 9 is 900, but this number is less than 900 therefore it cannot have three digits. It either has 2 digits or 1 digit. But it can't have 1 digit because it is more than a multiple of ten. Therefore the number has exactly two digits, and the first digit is 9. Since the digits sum to 12, the other digit must be 3. 93.