6 for 3-digits, 6 for 2-digits, 3 for 1-digits, and 15 for all of the combinations
Yuo can make only one combination of 30 digits using 30 digits.
Two make combinations you would take 2x1=2 combinations only
8
you cam make 36 different combinations.Ans 2.If you roll one dice twice, there are 36 combinations, if and only if you count 1,2 as different from 2,1.If you are rolling two dice (at once) there are only 21 different combinations !
There are only 10 combinations. In each combination one of the 10 digits is left out.
The answer is 31C5 = 31!/[26!5!] = 169,911
There is only 1 combination.
Only one.
6
There are 210 of them, and I regret that I do not have the time to list them all.
87400 combinations
If you use them only once each, you can make 15 combinations. 1 with all four digits, 4 with 3 digits, 6 with 2 digits, and 4 with 1 digit. There is also a combination containing no digits making 16 = 24 combinations from 4 elements.