how to find subsets

Hi, if we have a set A={1,2,3,4,5,6} how can we find its subsets with four and five elements.

Answer 1

[Mischa Kim]

Hello, use nchoosek

 A     = [1,2,3,4,5,6];
 subsA = nchoosek(A,4)

for four elements, for example.

Answer 2

[math search]

Thank you for the reply.