NCERT Miscellaneous Exercise Q10 - Relations and Functions
Question: Let A={1,2,3,4}, B={1,5,9,11,15,16}, and f={(1,5),(2,9),(3,1),(4,5),(2,11)}. Is (i) f a relation from A to B, and (ii) f a function from A to B?
Answer: (i) Yes. (ii) No.
Full step-by-step NCERT solution with diagrams on Something by Zero.