Q. Let A={1,2,3,4,5},B={1,3,5,7,9,10,17,26,30} Which of the following sets of ordered pairs are (i) relations (ii) functions (iii) neither,from A to B
(a)R1={(1,3),(3,3),(5,17),(1,2)}
(b) R2={(3,7),(4,5),(5,30)}
(c) R3={(x,y):xϵA,yϵB,x+y=8}
(d) R4={(x,y):xϵA,yϵB,y=x2+1} (e)R5={(x,y):xϵA,yϵB,y=2x−1}