2026年9月14日星期一

The Lock Puzzle

Enumeration was the first method that came to my mind. At first, it was difficult to see a clear relationship, but as I listed out the changes in the lockers’ states, I gradually started to notice a pattern. I noticed that after a certain student changes a locker’s status, its state remains fixed because no more students change that locker. As the number got larger, we can see there is a pattern that only square-numbered lockers change status. After finding this pattern, I started to think about why it happens. It took me a while to connect the pattern to the factors of each locker number.





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Reflection on the Presentation.

Overall, I think our presentation went really well. Everyone in our group did a great job with the parts we had planned. I introduced the or...