First slide

Introduction to Relations (XI) on Sets

Question

For non-empty subsets $A$ and $B$ ,

Moderate

A

Any subset of $A \times B$ defines a function from $A$ to $B$
B

Any subset of $A \times B$ defines an equivalence relation
C

Any subset of $A \times A$ defines a function on $A$
D

Any subset of $A \times B$ defines a relation from $A$ to B

Solution

See the definition of function

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