The Excel COMBIN function returns the number of combinations (in any order) of a given number of items. To use COMBIN, specify the total number of items and the number of items in each combination.
The Excel FACT function returns the factorial of a given number. For example, =FACT(3) returns 6, equivalent to 3 x 2 x 1.
The Excel PERMUT function returns the number of permutations (combinations where order is significant) of a given number of items. To use PERMUT, specify the total number of items and "number chosen", which represents the number of items in each...
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