Problem of the Week

Current Problem

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About the Problem of the Week...

A panel in the Mathematics Department publishes a challenging problem once a week and invites college & pre-college students, faculty, and staff to submit solutions. The objective of this is to stimulate and cultivate interest in good mathematics, especially among younger students. Solutions are due within two weeks from the date of publication and should be sent by campus or U.S. mail to:

• Problem of the Week
  Department of Mathematics, Purdue University
  150 N. University Street, West Lafayette, IN 47907-2067
  

Solutions may also be faxed to 765-494-0548.

Every Purdue student who submits three or more correct solutions will receive a Certificate of Merit. Each semester, a prize fund of $300.00 will be distributed among the Purdue undergraduates who have contributed at least six correct solutions for that semester series.

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Problem History:

Semester	Problem	Solution
Spring 2008	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5
	Problem 4	Solution 4
	Problem 3	Solution 3
	Problem 2	Solution 2
	Problem 1	Solution 1
Fall 2007	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5
	Problem 4	Solution 4
	Problem 3	Solution 3
	Problem 2	Solution 2
	Problem 1	Solution 1
Spring 2007	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5	* revised
	Problem 4	Solution 4	* revised
	Problem 3	Solution 3
	Problem 2	Solution 2
	Problem 1	Solution 1
Fall 2006	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5
	Problem 4	Solution 4
	Problem 3	Solution 3
	Problem 2	Solution 2
	Problem 1	Solution 1
Spring 2006	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5
	Problem 4	Solution 4
	Problem 3	Solution 3
	Problem 2	Solution 2
	Problem 1	Solution 1
Fall 2005	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5
	Problem 4	Solution 4
	Problem 3	Solution 3
	Problem 2	Solution 2
	Problem 1	Solution 1
Spring 2005	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5
	Problem 4	Solution 4
	Problem 3	Solution 3
	Problem 2	Solution 2
	Problem 1	Solution 1
Fall 2004	Problem 14	Solution 14
	Problem 13	Solution 13
	Problem 12	Solution 12
	Problem 11	Solution 11
	Problem 10	Solution 10
	Problem 9	Solution 9
	Problem 8	Solution 8
	Problem 7	Solution 7
	Problem 6	Solution 6
	Problem 5	Solution 5
	Problem 4	Solution 4
	Problem 3	Solution 3