If A = {1,2,3,4} , B = {3,4,5,6}, C = {5,6,7,8} and D = {7,8,9,10}; find
(i) AB (ii) AC (iii) BC (iv) B D
(v) ABC (vi) ABD (vii) BC D

(i) AB = {1,2,3,4,5,6}
(ii) AC = {1,2,3,4,5,6,7,8}
(iii) BC = {3,4,5,6,7,8}
(iv) B D = {3,4,5,6,7,8,9,10}
(v) ABC
AB = {1,2,3,4,5,6}
C = {5,6,7,8}
ABC = {1,2,3,4,5,6,7,8}
(vi) ABD
AB = {1,2,3,4,5,6}
D = {7,8,9,10}
ABD = {1,2,3,4,5,6,7,8,9,10}
(vii) BC D
BC = {3,4,5,6,7,8}
D = {7,8,9,10}
BC D = {3,4,5,6,7,8,9,10}