Find the union of two sets

The video tutorial explains the concept of the union of sets in set theory. It defines the union as a combination of all elements from two sets, A and B, including elements that are in either or both sets. The tutorial emphasizes that shared elements should not be repeated in the union. It concludes by summarizing the process of finding the union by combining all elements from both sets.

What does the union of two sets A and B include?

• Only elements that are in both A and B

• Elements that are in either A or B, or both

• Only elements that are unique to A

• Only elements that are unique to B

In the example given, which number is shared by both sets A and B?

• 3

• 12

• 6

• 9

Why is the number 9 not written twice in the union of sets A and B?

• Because it is already included once in the union

• Because it is only in set B

• Because it is only in set A

• Because it is not part of the union

What is the correct order of elements in the union of sets A and B?

• 3, 6, 9, 12, 2, 4, 8

• 9, 3, 6, 12, 4, 8

• 12, 9, 8, 6, 4, 3, 2

• 2, 3, 4, 6, 8, 9, 12

What is the main takeaway from the union of two sets?

• It lists elements in descending order

• It combines all elements from both sets without repetition

• It excludes elements that are in both sets

• It only includes elements that are in both sets