Topic 1: Cartesian products of sets
Topic 2: Relations
Topic 3: Functions

In mathematics, a set is a well-defined collection of distinct objects, considered as an object in its own right. The arrangement of the objects in the set does not matter. 

1.1 Sets and their Representations

1.2 Types of Sets

1.3 Operations on Sets

1.4 Practical Problems on Union and Intersection of Two Sets