Day 0

**Which pocket will the ball end up in?**

Assume that the ball is shot at a 45 degree angle directly from corner $\text{B}$ of the table and that it will only land in a pocket if the center of the ball meets the corner of the pocket *exactly*. Model the ball as a point mass on a frictionless table.

This puzzle can be solved by carefully considering the path of the ball bounce-by-bounce, but there's also a

beautifulshortcut that combines geometry and algebra to calculate the solution in <1 minute!

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