C++

I JUST NEED THE ANSWER

2. Let A={xN:3x13},B={xN:x is even }, and C={xN : x is odd }. (a) Find AB. (b) Find AB. (c) Find BC. (d) Find BC. 3. Find an example of sets A and B such that AB={3,5} and AB= {2,3,5,7,8}