Question

Which sets of ordered pairs represent functions from A to B?
A={a,b,c} and B={0,1,2,3}

Answer 1

a) {(a,1), (c,2
a) {(a,1), (bc,2),(c,3)}
a) {(1,a), (0,a),(2,c),(3,b)}
a) {(c,0),(b,0),(a,3)}