You can
put this solution on YOUR website!The first digit can't be 0,
so it must be 1,3,5,7, or 9
That's 5 possible
The next digit can be 0,1,2,3,4,5,6,7,8 or 9
That's 10 possible
The 3rd digit can be 0,2,4,6, or 8
That's 5 possible
The possible different numbers are: