Question

if A= {1,2,3},B={1,2,3,4,5} then find AuB A^B what do you notice
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Answer 1

Given :

A = {1,2,3}

B = {1,2,3,4,5}

A ∪ B :

{1,2,3} ∪ {1,2,3,4,5}

A ∪ B = {1,2,3,4,5}

A ∩ B :

{1,2,3} ∩ {1,2,3,4,5}

A ∩ B = {1,2,3}

We can notice that, A ∪ B = B = {1,2,3,4,5} and A ∩ B = A = {1,2,3}.