Let ss be the universal set, where:
s={1,2,,19,20}s={1,2,,19,20}
let sets aa and bb be subsets of ss, where:
set a={1,2,4,5,8,9,11,12,14,15,17,18,19 }a={1,2,4,5,8,9,11,12,14,15,17,18,1 9}
set b={2,3,8,9,12,18,19}b={2,3,8,9,12,1 8,19}
find the following:
list the elements in the set (a∪ba∪b):
(a∪b)(a∪b) = { }
enter the elements as a list, separated by commas. if the result is the empty set, enter dne
list the elements in the set (a∩ba∩b):
(a∩b)(a∩b) = { }
enter the elements as a list, separated by commas. if the result is the empty set, enter dne
you may want to draw a venn diagram to answer this question.

1) A∪B={1,2,3,4,5,8,9,11,12,14,15,17,18,19}

2) A∩B = { 2,3,8,9,12,18,19}

Step-by-step explanation:

Since we have given that

A={1,2,4,5,8,9,11,12,14,15,17,18,19}

B={2,3,8,9,12,18,19}

So, we need to find the union of above sets and intersection of above sets.

Since union is the collection of all elements either in A or in B.

So, it becomes,

A∪B={1,2,3,4,5,8,9,11,12,14,15,17,18,19}

And intersection is the common element both in A and B.

A∩B = { 2,3,8,9,12,18,19}

it can be to see completed examples before writing, in order to examine what makes for an effective piece. see how these intros give some context before posing the topic and lead naturally into the body paragraphs, where the evidence will be listed. you can imagine how the author has organized the rest of the piece.

"we buried my cousin last summer. he was 32 when he hanged himself from a closet coat rack in the throes of alcoholism, the fourth of my blood relatives to die prematurely from this deadly disease. if america issued drinking licenses, those four men—including my father, who died at 54 of liver failure—might be alive today. that is a good example piece   some steps that are .

. writing something that happened to you

.read a book you like to get ideas from there

. lastly you can make a venn diagram

hope this plz make brainliest

step-by-step explanation: