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Show that the relation R on the set A = {1,2,3,4,5) given by R = {(a,b): la -bl is even)} is an equivalence relation. Also, show that all elements of (1, 3, 5) are related to each other and all the elements of (2, 4) are related to each other, but no element of (1, 3, 5) is related to any element of (2, 4).

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The correct Answer is:
Domain of R `={1,2,3,4,….20}` and Range of R `={1,3,5,7,9,….,39}`. R is neither reflexive nor symmetric nor transitive.
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