The old Flash version is here. To solve this problem using the Combination and Permutation Calculator do the following. Plus you can even choose to have the result set sorted in ascending or descending order.
6-2 6 2.
For example to calculate the number of 3-number combinations you can use a formula like this. The old Flash version is here. This combination generator will quickly find and list all possible combinations of up to 7 letters or numbers or a combination of letters and numbers. We have to construct all possible unique combinations.