Venn diagrams represent these objects on a page as circles or ellipses, and their placement in relation to each other describes the relationships between them.
What is the probability that a student does not use any social network? It represents members that are not present in set A and can be represented using a Venn diagram with a circle.
If the letter U represents the Universal set, then the region covered in the universal set, excluding the area covered by set A, represents the complement of A.