In a way you are correct, except that it's "factorial" not "faculty" - I used the word permutations a bit too loosely.

However, the module Math::Combinatorics can still be used to iterate through the 2**N subsets as well as the nCr combinations and the N! permutations.

In reply to Re^3: Obtaining terms in an expansion by DungeonKeeper
in thread Obtaining terms in an expansion by randyk

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