✍️ Author Note ⬇️ Download PDF Class 11 Maths — Chapter 1: Sets (Complete Notes) The concept of "Sets" is a fundamental part of modern mathematics. It serves as the basic building block for advanced chapters like Relations, Functions, Probability, and Geometry. In this detailed guide, we will cover everything from basic definitions to practical formulas. 1. What is a Set? Definition: A Set is a well-defined collection of objects. Here, "well-defined" means that there should be no ambiguity regarding whether a particular object belongs to the collection or not. The answer must remain the same regardless of who is asked. 2. Representation of Sets There are two primary methods to represent a set: A. Roster or Tabular Form In this method, all elements of a set are listed inside br...