Question

If A= {2,4,6,9} B= {4,6,18,27} a belongs to A, b belongs to B, find all the orderd pairs such that "a is a factor of b", a<b. R= {(a,b)/a belongs to A, b belongs to B, "a is a foctor of b" a<b}​

Answer 1

Answer:

R={(2,4)(2,6)(2,18),(6,18)(9,18),(9,27)}