NCERT Exercise 1.1 Q8 - Relations and Functions
Question: On A = {1, 2, 3, 4, 5}, show R = {(a, b) : |a − b| is even} is an equivalence relation, and that {1, 3, 5} and {2, 4} are the two classes with no cross relations.
Answer: R is an equivalence relation with classes {1, 3, 5} and {2, 4}.
Full step-by-step NCERT solution with diagrams on Something by Zero.