1. The problem asks why theoretical and experimental results are not always the same. 2. Theoretical results are based on mathematical models and assumptions, which are idealized and do not account for all real-world variables. 3. Experimental results come from actual measurements and observations, which can be affected by errors, noise, and uncontrolled factors. 4. Because of these practical limitations, experimental results may differ from theoretical predictions. 5. However, with a large number of trials, experimental results tend to approach theoretical values due to the Law of Large Numbers. 6. Therefore, the best answer is: "Results from an experiment don't always match the theoretical results, but they should be close after a large number of trials."