There is only one combination. The order of the digits in combinations makes no difference. They are considered as being different if they are permutations, not combinations.
Yuo can make only one combination of 30 digits using 30 digits.
9
12, including a combination containing 0 digits.
If you use each number once, there are six combinations.
Assuming the digits cannot be repeated, there are 7 combinations with 1 digit, 21 combinations with 2 digits, 35 combinations with 3 digits, 35 combinations with 4 digits, 21 combinations with 5 digits, 7 combinations with 6 digits and 1 combinations with 7 digits. That makes a total of 2^7 - 1 = 127: too many for me to list. If digits can be repeated, there are infinitely many combinations.
All the possible digits (10 of them; 0-9) are multiplied by themselves by the number of digits that can be shown in the lock. (3) This is 103, or 1,000. This certainly shows why guessing is not a good way to break into a numerical lock, especially since three is a rather low number of digits for one!
6,720 combinations.
Oh, what a happy little question! On a 3-number lock, there are 1,000 possible combinations. Isn't that just wonderful to think about? Just remember to take your time and enjoy the process of finding the right combination, like painting a beautiful landscape!
5040, assuming none of the digits are the same. (Assuming they're not, there's 5040 unique combinations you can make out of 7 digits).
10000
10,000.
6 for 3-digits, 6 for 2-digits, 3 for 1-digits, and 15 for all of the combinations
Since a number can have infinitely many digits, there are infinitely many possible combinations.
45
There are 167960 9 digits combinations between numbers 1 and 20.
about 1,0000000000000