3! or 6 combinations can be made from three distinct numbers. For this example they are: 345, 354, 534, 543, 435, 453.
6
Six combinations: 123, 132, 213, 231, 312, 321
10
24
There are 720 combinations if you use each of the digits only once per combination.
6
32C3 = 4960
Six combinations: 123, 132, 213, 231, 312, 321
6 ways: 931,913,139,193,391,319
Only three: 12, 13 and 23. Remember that the combinations 12 and 21 are the same.
If the numbers can be repeated and the numbers are 0-9 then there are 1000 different combinations.
The number of combinations of six numbers that can be made from seven numbers will depend on if you can repeat numbers. In all there are over 2,000 different numbers that can be made.
20,3,10 or 12,5,10 there are many combinations of numbers
45
6 different combinations can be made with 3 items
017, 071, 107, 170, 701, 710. 6 combinations
If the numbers are allowed to repeat, then there are six to the fourth power possible combinations, or 1296. If they are not allowed to repeat then there are only 360 combinations.