It is given that

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}

Find the symmetric difference A Δ B, when A = {1, 2, 3} and B = {3, 4, 5}.