Question

7. U{1 2 3 4 5 6 7 8} A {1 3 5 7} B ={124 6} Find A',B'​

Answer 1

Answer:

In set theory, if A and B are sets, then the union of A and B , written A ⋃ B, is {x: x ∈ A or x ∈ B}. By asserting that x ∈ A or x ∈ B, we do not exclude the possibility that x is a member of both A and B. Further, if the same object/element is member of both A and B, then that element is counted only once in the new set formed by the union of A and B.

Given, A = {1,2,3,4} and B = {1,5,7}.

∴ By definition, A ⋃ B = {1,2,3,4,5,7}