Question

Let A={ 1,2,3} and B = ∅ , Then A∪B is

Answer 1

Step-by-step explanation:

Correct option is

A

{(1,a),(3,b),(2,a),(2,b)}

B

{(1,b),(2,a),(3,a)}

C

{(1,a),(2,b)}

A={1,2,3}

B={a,b}

A×B={(1,a),(2,a),(3,a),(1,b),(2,b),(3,b)}.

{(1,a),(3,b),(2,a,)(2,b)}⊂A×B

{(1,b),(2,a),(3,a)}⊂A×B

{(1,a),(2,b)}⊂A×B

Answer 2

Answer:

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