Write the equivalence class [3]_7 as a set.

Show that the relation R on the set A={1, 2, 3, 4, 5} given by R={(a,b): abs(a-b) is even} in an equivalence ralation.

Show that the relation R is in the set A={1,2,3,4,5} given by R={(a, b): |a-b| is divisible by 2}, is an equivalence relation. Write all the equivalence classes of R.

Show that the relation R on the set Z of integers given by R = {(a,b): 2 divides (a - b)} is an equivalence relation.

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).

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

State the reason for the relation R in the set {1, 2, 3} given by R ={(1, 2), (2, 1)} not to be transitive.

Write the smallest equivalence relation on A = {1,2,3}.

Let R={(m,n):2 divides m+n} on Z. Show that R is an equivalence relation on Z.

List the members of the equivalence relation defined by {{1},{2},{3,4}} partitins on X={1,2,3,4}.Also find the equivalence classes of 1,2,3 and 4.