This is a Algebra 2 question regarding sets, objects and intersect?

Question

Name sets of objects in the room as an example of each of the following:

1. two sets whose intersection is empty
2. two sets whose union contains more members than either set
3. two sets whose union is equal to one of the sets
4. two sets whose intersection is equal to one of the sets

Answer 1

1.sets of those who know only english and those who know only french
2.union of set containing english speaking people (only english) and french speaking people (only french)
3.the set of member of a family and the senior members in the family
the set of the senior members is a subset of the set of the family members and so the union is equal to the set of the members of the family

Answer 2

1. Things you can sit on, and things you can't sit on
2. Things you can sit on, and things you can't sit on (for example, a floor is something you can sit on and a ceiling is something you can't). Since there is now at least ONE thing in a room in each set, and the sets have no overlap, the union has m+n things in it, where m is the number of things you can sit on and n is the number of things you can't sit on. Since m and n are at least 1 each (floor, ceiling), m+n > n and m+n > m
3. things you can sit on, and things you can sit on that are the color of the floor. The union is ALL of the things you can sit on!
4. things you can sit on, and things you can sit on that are the color of the floor. The intersection is things you can sit on that are the color of the floor.