Two integers.
The sum of the number of digits in all the numbers between 31 and 400 inclusive is 1041.
Two of them.
20 number
999 are whole.
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.
The sum of the number of digits in all the numbers between 31 and 400 inclusive is 1041.
I believe here are 51 such numbers.
Two of them.
There are 5460 five digit numbers with a digit sum of 22.
999 are whole.
20 number
6
13 and 22
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.
13 and 22
The answer is 28
The sum of your digits is the total number arrived at after adding two or more numbers.