10000
6,720 combinations.
125
If order doesn't matter, 15 combinations and if order does matter, 360 combinations are possible.
10x9x9x9
10000
6,720 combinations.
125
There are millions of possible combinations.
I would have to say 10,000 possible combinations. (0000, 0001, 0002 through 9998, 9999)
If order doesn't matter, 15 combinations and if order does matter, 360 combinations are possible.
10,000
2^n possible combinations
There are 2^5 = 32 different combinations of the five traits possible.
There are 167960 combinations.
Since a number can have infinitely many digits, there are infinitely many possible combinations.
10x9x9x9