Answer :

Given: A = {2, 4, 5, 7} and b = {1, 2, 3, 4, 5, 6, 7, 8}


(i) R = {(x, y) x ϵ A, y ϵ B and x divides y}


So, R in Roster Form,


R = {(2, 2), (2, 4), (2, 6), (2, 8), (4, 4), (4, 8), (5, 5), (7, 7)}


(ii) Dom(R) = {2, 4, 5, 7}


Range(R) = {2, 4, 5, 7, 6, 7, 8}


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