### Mathematics Class XI

Unit-I: Sets and Functions
Chapter 1: Sets
Unit-II: Algebra
Chapter 5: Binomial Theorem
Unit-III: Coordinate Geometry
Chapter 1: Straight Lines
Chapter 2: Conic Sections
Unit-IV: Calculus
Unit-V: Mathematical Reasoning
Unit-VI: Statistics and Probability
Chapter 1: Statistics
Chapter 2: Probability

# Relation

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Let and be two arbitrary sets. A binary relation from to is a subset of .

If then is called relation on where be an element of .

We say that is related to through .

Sometimes instead of , we can use for relation and written as if .

Since , is a relation from to .

, is also a relation from to .

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