There are 44 numbers less than 800 whose digits sum to 8:
8, 17, 26, 35, 44, 53, 62, 71, 80, 107, 116, 125, 134, 143, 152, 161, 170, 206, 215, 224, 233, 242, 251, 260, 305, 314, 323, 332, 341, 350, 404, 413, 422, 431, 440, 503, 512, 521, 530, 602, 611, 620, 701, 710.
There are 15 of them.
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.
10 digits are numbers in the billions.
there are 899 whole numbers that have three digits.
May have missed a few, there's twelve:152433425160105114123132141150
I believe here are 51 such numbers.
21.
There are 17 such numbers.
21
There are 15 of them.
16 of them.
18
14
002+002+001=005
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.
2 11 20 101 110 200
10 digits are numbers in the billions.