Question

plz Solve the problem in sets chapter​

Answer 1

Step-by-step explanation:

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A ={6,9,11}

B = { } (null set)

AU(phi) = A

{6,9,11} U{ } = {6,9,11}

Answer 2

A ={6,9,11} B ={}

AUB = {6,9,11} = A