Question

Given the following sets.

Answer 1

A (upside down U) B....this is the intersection of A and B....the numbers that are both in A and B.
that would be an empty set because there are no terms that are in A, also in B

Answer 2

The symbol ∩ is the intersection operation. This operations finds the elements both in A and B.

The common elements in both A and B is the null set: {∅}

This is because A and B have no common elements.