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  1. Sets (Maths) - Notation, Types, Symbols & Examples - BYJU'S

  2. Sets - Definition, Symbols, Examples | Set Theory - Cuemath

  3. Set (mathematics) - Wikipedia

  4. What Are Sets? Definition, Types, Properties, Symbols, Examples

  5. Introduction to Sets - Math is Fun

  6. Set -- from Wolfram MathWorld

  7. 1.1: Basic Concepts of Set Theory - Mathematics LibreTexts

  8. What is a Set? Definition, Types and Examples - BYJU'S

  9. Set | Brilliant Math & Science Wiki

  10. 1.1: Basic Set Concepts - Mathematics LibreTexts