To determine how many numbers have a sum of digits equal to nine, we consider the possible combinations of digits that add up to nine. These combinations include (9,0), (8,1), (7,2), (6,3), and (5,4). Therefore, there are five possible combinations of digits that sum up to nine.
It is ... wait for it ... NINE!
There are 5460 five digit numbers with a digit sum of 22.
Nine hundred thirty (930) is the highest three digit number whose digits have a sum of 12. 9+3+0=12. Any numbers higher than that will give you an sum greater than 12.
35.
21.
There are nine of them. They are:108117126135144153162171180
900 It is the only three digit number with a nine in the numbers place
It is ... wait for it ... NINE!
9, 27, 45, 63, 81 Five of them.
-8
None. The sum of one digit can't be twice the size of the digit.
120
There are 5460 five digit numbers with a digit sum of 22.
Only one . . . 999 .
There are five such numbers.
-3
1010111 1111100 1011101 and many more