This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.

# Subsets

 Subsets[list]gives a list of all possible subsets of list. Subsets[list, n]gives all subsets containing at most n elements. Subsets[list, {n}]gives all subsets containing exactly n elements. Subsets[list, {nmin, nmax}]gives all subsets containing between nmin and nmax elements. Subsets[list, nspec, s]gives the first s subsets. Subsets[list, nspec, {s}]gives the s subset.
• Subsets[list] gives the power set of list.
• Subsets[list] orders subsets with shortest first, and later elements in list omitted first.
• If the elements of list are in the order returned by Sort, then the complete result from Subsets[list] will also be in this order.
• Subsets[list, {nmin, nmax, dn}] gives subsets containing nmin, nmin+dn, ... elements.
• Subsets[list, nspec, spec] gives the same result as Take[Subsets[list, nspec], spec].
All possible subsets (power set):
 Out[1]=

All possible subsets containing up to 2 elements:
 Out[1]=
Subsets containing exactly 2 elements:
 Out[2]=
 Scope   (1)
 Applications   (7)
New in 5.1