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                        Combinatorics

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                        Suggeriment

                        You can learn about combinatorics here.

                        Combinations, permutations or variations of a set of numbers can be calculated. Be careful, though: results are very large.

                        Counting Symbol
                        Variations or k-permutations of n
                        Permutations
                        Combinations
                        Variations with repetition or n-tuples of m-sets
                        Permutations with repetition
                        Combinations with repetition
                        Binomial coefficient

                        Factorial

                        You can also write ! with the keyboard.

                        You can see several examples here:

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