Answer:
There are a few things you need to know about sets . They are :
1.Sets are represented in a Venn diagram by circles which are drawn inside a rectangle (which represents the universal set).
2.The region outside the circle represents the complement of the set.
3.The overlapping region of two circles represents the intersection of the two sets.
4.Two circles together represent the union of the two sets.
5. Two sets are said to be disjoint sets if they do not share any common elements.
6. (see image ) B is a proper subset of A. This means B is a subset of A, but B ≠ A.
7. A is a proper superset of B. This means that A is a superset of B (all values of set B can be found in set A ) , but A≠B