1. The problem is to understand how the values $n=10$ and $n=12$ were calculated. 2. Typically, $n$ represents a number of terms, objects, or elements in a sequence or set. 3. To calculate $n$, you need to know the context or formula used. For example, if $n$ is the number of terms in an arithmetic sequence, it can be found using the formula: $$n = \frac{\text{last term} - \text{first term}}{\text{common difference}} + 1$$ 4. If $n=10$, it means there are 10 terms or elements counted according to the problem's conditions. 5. Similarly, $n=12$ means there are 12 terms or elements. 6. Without the exact problem context, the calculation likely involved counting or applying a formula like the one above. 7. If you provide the original problem or formula, I can show the exact steps for calculating $n=10$ and $n=12$.