Question

Let A = { 1, 2, 5, 7 } and B = { 1, 5, 9, 12 }. Write each of the following sets.

1. A ∩ b
2. A ∪ B

Answer 1

1,5 answer of 1 St questions

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

Answer 2

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 }