Respuesta :

parakritibhattrai

Answer:

1,5 answer of 1 St questions

1,2,5,7,9,12 answer 2nd questions

Amero

Step-by-step explanation:

1.A ∩ B

A { 1, 2, 5, 7 } and B = { 1, 5, 9, 12 }.

                They have both five and one so the answer is

A ∩ B= {1,5}

2. A ∪ B

           You only need to list everything(but no repetition) so the answer is

{ 1, 2, 5, 7, 9, 12 }

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