The image contains the following sets and a question related to set operations:

1. $A = \{2, 3, 4\}$
2. $B = \{3, 4, 5\}$

The question appears to ask for $A \cup B$, the union of sets $A$ and $B$.

Solution:

The union of two sets $A$ and $B$, denoted as $A \cup B$, includes all elements that are in either $A$, $B$, or both.

1. Elements in $A$ are: 2, 3, 4.
2. Elements in $B$ are: 3, 4, 5.

Combining all unique elements from both sets, we get: $A \cup B = \{2, 3, 4, 5\}$

Answer:

$A \cup B = \{2, 3, 4, 5\}$

Would you like more details or have any questions?

Here are some related questions:

1. How do you find the intersection of two sets?
2. What is the difference between the union and intersection of sets?
3. Can you explain the concept of the complement of a set?
4. How do you calculate the difference between two sets (e.g., $A - B$)?
5. How does the symmetric difference of two sets differ from their union?

Tip: When finding the union of two sets, remember to include only unique elements without repeating any duplicates.