Mark the correct alternative in the following: The symmetric difference of A = {1, 2, 3} and B = {3, 4, 5} is

Question

Philoid · Accepted Answer

Here,A={1,2,3} and B={3,4,5}

A∖B={1,2,3}∖{3,4,5}

={1,2,3}∖{3}

={1,2}

B∖A={3,4,5}∖{1,2,3,4}

={3,4,5}∖{3}

={4,5}

AΔB=(A∖B)⋃(B∖A)

={1,2}⋃{4,5}

={1,2,4,5}