Introduction of relations: when the word relation comes to our mind then we discuss the relations with our family, friends, and colleagues but here we are going to discuss the relation in mathematics. We have to understand that relations in sets are very important and we use these relations in our daily life. The only way to learn mathematics is to do mathematics - Paul Halmos Introduction In our daily life, we come across many patterns that characterize relations such as brother and sister, father and son, teacher and student. In mathematics also, we come across many relations such as number `m` is less than number `n`, line `l` is parallel to line `m`, set `A` is a subset of set `B`. In all these, we notice that a relation involves pairs of objects in certain order. Cartesian Product Given two non-empty sets `S` and `T`. The Cartesian product `S \times T` is the set of all ordered pairs of elements from `S` and `T`, such that `S \times T=\{(s, t): s \in S, t \in T\}...
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