Answer
{border collie, poodle}
{border collie}
{poodle}
{}
Work Step by Step
We need to list all subsets of the following set:
A = {border collie, poodle}
Those subsets are:
{border collie, poodle}
{border collie}
{poodle}
{}
We reach the solution by examining all combinations of taking one or more element from A to get a list of subsets.
Both A itself and an empty set are subsets of A.
