What is relation ?

1.	What is relation ?
Answer» A relation R from a non-empty set A to a non-empty set B is a subset of the cartesian product set A × B. The subset is derived by describing a relationship between the first element and the second element of the ordered pairs in A × B.The set of all first elements in a relation R is called the domain of the relation B, and the set of all second elements called images is called the range of R.

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