Question

IfA = {1, 2, 3, 4}, B = {3, 4, 5, 6}, C = {5, 6, 7, 8} and D = {7, 8,9, 10}; find

(i) A∪B

(ii) A∪C

(iii) B∪C

(iv) B ∪D

(v) A∪B ∪C

(vi) A∪B ∪D

(vii) B∪C ∪D

Answer 1

A = {1, 2, 3, 4], B= {3, 4, 5, 6}, C = {5, 6, 7, 8} and D = {7, 8, 9, 10}

(i) A∪B = {1, 2, 3, 4, 5, 6}

(ii) A∪C = {1, 2, 3, 4, 5, 6, 7, 8}

(iii) B∪C = {3, 4, 5, 6, 7, 8}

(iv) B ∪D = {3, 4, 5, 6, 7, 8, 9, 10}

(v) A∪B ∪C = {1, 2, 3, 4, 5, 6, 7, 8}

(vi) A∪B ∪D = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

(vii) B∪C ∪D = {3, 4, 5, 6, 7, 8, 9, 10}