Question

let a ={1,2,3 } and b ={1,2,3,4} .the relations r1 = {(1,1),(2,2),(3,3)} and r2 = {(1,1),(1,2),(1,3),(1,4)} can be combined to obtain r1-r2?

Answer 1

Answer:

I didn't understand this question.

Answer 2

I think question is not completed bro.

I also can't understand.

sorry