To get the mathematical result 10 using the numbers 8, 3, 9, and 2 exactly once, you can use the following expression:

$(8 - 3) \times 2 = 10$

Here’s the step-by-step breakdown:

1. Subtract 3 from 8: $8 - 3 = 5$

2. Multiply the result by 2: $5 \times 2 = 10$

This way, you have used each of the numbers 8, 3, 9, and 2 exactly once to obtain the result 10.

Would you like more details or have any questions?

Here are 5 related questions to expand your understanding:

1. How can you get the result 15 using the numbers 8, 3, 9, and 2 exactly once?
2. What is another possible way to get the result 10 using a different combination of operations on 8, 3, 9, and 2?
3. How do you solve for a result of 18 using the numbers 8, 3, 9, and 2?
4. Can you derive a result of 24 using the numbers 8, 3, 9, and 2?
5. What is the result of (8 + 2) ÷ (9 - 3)?

Tip: Always check the order of operations (PEMDAS/BODMAS) when solving arithmetic problems to ensure accuracy.