Question

1.Let A = {1,2,3,4)Write a relation on A which is symmetric only

Answer 1

Answer:

So, (1,1),(2,2),(3,3) should be in relation. Symmetric means if (a,b) is in relation, then (b,a) should be in relation. Transitive means if (a,b) is in relation and (b,c) is in relation, then (a,c) is in relation.

Explanation: