To find the union $A \cup B$ of two sets $A$ and $B$, you combine all the elements from both sets, ensuring that there are no duplicates.

From the image, we have:

• $A = \{5, 6, 7, 8, 9, 10, 11, 12, 13, 14\}$
• $B = \{3, 5, 7, 9, 11, 13\}$

The union $A \cup B$ contains all elements that are in either set $A$ or set $B$, without repetition. Therefore:

$A \cup B = \{3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14\}$

Would you like any more details or further explanation?

Here are 5 related questions to extend this topic:

1. What is the intersection $A \cap B$ of the sets $A$ and $B$?
2. How do you find the difference $A - B$ between two sets?
3. What is the complement of set $A$ if the universal set is all integers from 1 to 15?
4. How does the symmetric difference $A \oplus B$ work, and what would it be for these sets?
5. Can you have the union of more than two sets, and how would that work?

Tip: When finding a union of sets, always remove duplicate elements to avoid repetition!