If repetitions are allows, 325.
If no repetitions are allows, then it is 32 x 31 x 30 x 29 x 28.
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.
8C6 = 28
9
506 = 15,625 million
If every number can be used as many times as you like, there are 104 = 10000 different combinations. If each number can only be used once, there are 9!/(9 - 4)! = 5040 combinations.
There are 3,628,800 different permutations that can be made when using the numbers 0 through 9, if each number is only used once in each combination.
24
Assuming that the eight numbers are all different and that none of them are zero, the number of combinations is 8C3 = 8!/(3!*5!) where n! = 1*2*3*...*n the number is 8*7*6 / (3*2*1) = 56
9!/5! or 3024
2 to the 7th power = 128 * * * * * No. That is the total number of combinations, consisting of any number of elements. The number of 2 number combinations is 7*6/2 = 21
4*3*2*1 = 24 different combinations.
10 Combinations (if order doesn't matter). 3,628,800 Possiblilities (if order matters).