Question

A = (1, 2.3.4.5) and B = {4.5.6.7). Find AUB and AB.
9.​

Answer 1

Step-by-step explanation:

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}

Answer 2

Answer:

The above answer is wrong

{1,2,3,4,5,6,7}

Given:

A = {1, 2.3.4.5}

B = {4,5,6,7}

So,

A U B= {1,2,3,4,5,6,7}

is the answer

Hope you may get it

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