18
279,999,720
940
There are no 3-digit whole numbers whose digits sum to 3. The smallest 3-digit number is 100, and the largest is 999, but in neither case is the sum of the digits equal to 3.
37
The answer is 39. 3+9=12, 3x9=27. 12+27=39.
I think it will be 17. The sum of digits is 8, which is the cube of 2.
18
279,999,720
940
137?
-5
There are no 3-digit whole numbers whose digits sum to 3. The smallest 3-digit number is 100, and the largest is 999, but in neither case is the sum of the digits equal to 3.
37
-9
The number is 81.
3,612,345,678