1. The problem asks to find $n(A)$ where $A = \{1, 2, 3, 4, 5, 6\}$. 2. The notation $n(A)$ represents the number of elements in the set $A$. 3. To find $n(A)$, count each distinct element in the set. 4. The set $A$ contains the elements: 1, 2, 3, 4, 5, and 6. 5. Counting these elements, we have 6 elements in total. 6. Therefore, $n(A) = 6$. Final answer: $n(A) = 6$.