This is an old revision of the document!

---

• Problem 7 Solved by Levi Axelrod and Matt Wolak.

• Problem 6 Solution submitted by Gerald Marchesi, Trinidad Segovia (a freshman student at Purdue University), and Mathew Wolak.

• Problem 5 Solution submitted by Ashton Keith (Purdue University), Gerald Marchesi, and Alif Miah.

• Problem 4 Solution submitted by Alif Miah,Takeru Sueyoshi (from Anglo-Chinese Junior College based in Singapore), and Mathew Wolak.

• Problem 3 No solutions were submitted.

• Problem 2 Solved by Gerald Marchesi, Josiah Moltz, and Mathew Wolak.

• Problem 1 Solution submitted by Raisha Chowdhury, Gerald Marchesi, Josiah Moltz, and Mathew Wolak.