1. **Problem:** Find the intersection of sets L and A, where \(L = \{1, 2, 3, 4\}\) and \(A = \{3, 4, 5, 6\}\). 2. **Formula:** The intersection of two sets \(L \cap A\) is the set of elements common to both sets. 3. **Work:** \[L \cap A = \{x : x \in L \text{ and } x \in A\}\] 4. **Evaluate:** Elements common to both are \(3\) and \(4\). 5. **Answer:** \[L \cap A = \{3, 4\}\] This means the numbers 3 and 4 are in both sets L and A.