Question

IfA= {1,2,3,4,5} and B= {2,3,5,7} FindAUB?​

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}

Step-by-step explanation:

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