NCERT Example 20 - Relations and Functions

Question: Let X = {1,...,9}, R1 = {(x, y) : x − y is divisible by 3} and R2 = {(x, y) : {x, y} ⊂ {1,4,7} or {2,5,8} or {3,6,9}}. Show R1 = R2.

Answer: R1 = R2.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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