## Problem of the Week is now finished for the Spring 2023 semester..

Problem of the Week #655
Problem of the Week #654
• Problem
• Solution
• There were two fully correct solutions submitted by Nikki Nestor and Hailey Kamminga. The prize was split equally between them. There were partial solutions submitted by Sishir Goyyumukkala, Maleia Thompson, and Emily Dolan-Baker. All of them got the right answer, but there was a technical logical gap in their argument.
Problem of the Week #653
Problem of the Week #652
• Problem
• Solution
• There was one correct solution submitted by Emily Dolan-Baker.
Problem of the Week #651
• Problem
• Solution
• There were two correct solutions this week submitted by Lashawn Perkins and Sishir Gottumukkala. The prize was divided equally between the two.
Problem of the Week #650
• Problem
• Solution
• There was one correct solution by Koksal Karakus. Because Koksal is a graduate student no prize was awarded this week.
Problem of the Week #649
Problem of the Week #648
• Problem
• Solution
• There was one correct submission this week from Koksal Karakus. Since Koksal is a graduate student, no prize was awarded this week.
Problem of the Week #647
• Problem
• Solution
• There were two correct submissions from Haily Kamminga and Koksal Karakus. The prize was awarded to Haily Kamminga.
Problem of the Week #646
• Problem
• Solution
• There were three correct submissions from Emily Dolan-Baker, Michael Lieby, and Hannah Groothuis. Based on a random draw, the prize was divided between Emily and Hannah.
Problem of the Week #645
• Problem
• Solution
• There were three correct submissions from Brian Budd, Hannah Groothuis and Michael Leiby. Based on a random draw, the prize was divided between Budd and Groothuis.
Problem of the Week #644
• Problem
• Solution
• The problem was solved by 6 students: Hannah Groothuis, Maleia Thompson, Bryan Budd, Hailey Kamminga, Emily Dolan-Baker, and Michael Leiby. By a random draw the prize will be split between Brian and Emily.
Problem of the Week #643
• Problem
• Solution
• There were 6 correct solutions to problem #643. The problem was correctly solved by Drake Schreiber, Nikki Nestor, Hailey Kamminga, Michael Leiby, Emily Dolan, and Maleia Thompson. By a random draw, the prize was divided between Hailey and Emily.
Problem of the Week #642
• Problem
• Solution
• There was one correct solution by Koksal Karakus. There is no prize this time.
Problem of the Week #641
• Problem
• Solution
• There were two correct solutions to Problem 641 by undergraduates Emily Dolan-Baker and Nada Al-Ahmad. The prize is divided equally among them.
Problem of the Week #640
• Problem
• Solution
• This week there was one correct colution, by Koksal Karakus. There is no prize since he is not an undergraduate student.
Problem of the Week #639
• Problem
• Solution
• This week there was one correct solution by Koksal Karakus. There is no prize this week since Koksal is not an undergraduate.
Problem of the Week #638
• Problem
• Solution
• This week there was exactly one correct solution by Koksal Karakus. There is no prize this week since Koksal is not an undergraduate.
Problem of the Week #637
• Problem
• Solution
• This week there were three correct solutions. They were submitted by Koksal Karakus, Mitchell Dyer, and Emily Dolan-Baker. Koksal being a graduate student is not eligible for a prize. The prize was equally split between Mitchell and Emily.
Problem of the Week #636
• Problem
• Solution