This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.

# Permutations

 Permutations[list]generates a list of all possible permutations of the elements in list. Permutationsgives all permutations containing at most n elements. Permutationsgives all permutations containing exactly n elements.
• There are n! permutations of a list of n distinct elements.
• Repeated elements are treated as identical.  »
• The object list need not have head List.
Length-3 permutations of :
Length-3 permutations of :
Length-3 permutations of :
 Out[1]=

Length-3 permutations of :
 Out[1]=
 Scope   (4)
Repeated elements are treated as identical:
Use any expressions as elements:
Get permutations of all lengths, shortest ones first:
Get even-length permutations, longest ones first:
The list of elements can have any head:
The number of length-n permutations of a length-n list of distinct elements is n!:
The number of length-r permutations of a length-n list of distinct elements is :
If the input list is in the order given by Sort, so are its length-r permutations: