10 of 1 digit, 45 of 2 digits and 120 of 3 digits making 175 in all.
1000
If the numbers can be repeated and the numbers are 0-9 then there are 1000 different combinations.
109
999 of them.
168
1000
10000
If the numbers can be repeated and the numbers are 0-9 then there are 1000 different combinations.
109
168
There are 169.
There are 300 of them.
999 of them.
999
If 0 is not counted, and 1 is, then the answer is 1000.
125 if you include 1000.
Well first you will start off with 000, then go up until 999. So there would be 1000 different combinations.