RandomKSubset[l, k] gives a random subset of set l with exactly k elements.

RandomSubset[l] creates a random subset of set l.

RankBinarySubset[l, s] gives the rank of subset s of set l in the ordering of subsets of l, obtained by interpreting these subsets as binary string representations of ...

RankGrayCodeSubset[l, s] gives the rank of subset s of set l in the Gray code ordering of the subsets of l.

RankKSubset[s, l] gives the rank of k-subset s of set l in the lexicographic ordering of the k-subsets of l.

RankSubset[l, s] gives the rank, in canonical order, of subset s of set l.

UnrankKSubset[m, k, l] gives the m\[Null]^th k-subset of set l, listed in lexicographic order.

VertexColor is an option that allows the user to associate colors with vertices.

VertexLabelColor is an option that allows the user to associate different colors to vertex labels.

VertexLabelPosition is an option that allows the user to place a vertex label in a certain position relative to the vertex.