Question

Create a set A and a subset of A. Name the subset S. Find S'.

Answer 1

So, 'create a set A and a subset of A'
this is pretty open-ended. You can use any set that you want, as long as it does have elements in it. :)

Answer 2

Any ideas for some arbitrary set?

Answer 3

Hmm... well, okay.
A = {1, 3, 6, 7}
S = {1, 3}

S' would be the relative complement of S; the values of A not in S.
So, S' = {6, 7}.