Question

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

Answer 1

Let the set
A={1,2,3,4,5}

Subset of A, S={3,4,5}
S' is the set of all things in A that aren't in S
therefore
S'={1,2}

Answer 2

It is not necessary to take Set A as {1,2,3,4,5}