Jayden10711 Jayden10711

25-08-2021
Mathematics

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Аноним Аноним

25-08-2021

Step-by-step explanation:

A={6,9,11},B=ϕ

Here, B is empty set.

Therefore,

A∪B

=A∪ϕ

={6,9,11}

A intersection ϕ is ϕ I guess

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