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ProblemsMowaffaq Hajja, William P. Wardlaw, Shawn Hedman, David Rose, Mohammed Aassila, Barthel Wayne Huff, Robert Gregorac, Yaroslav Krylyuk, Shahin Amrahov, Richard K. Guy, J. P. V. Abad, Roy Barbara, Michel Bataille, Brian D. Beasley, Tom Beatty, J. C. Binz, Jean Bogaert, Brain Bradie, Stan Byrd, Lucas Van der Merwe, Robert Calcaterra, Minh Can, Michael Caulfield, John Christopher, Con Amore Problem Group, Charles K. Cook, Randall J. Covill, Knut Dale, Charles R. Diminnie, Daniele Donini, Robert L. Doucette, Ragnar Dybvik, Timothy Eckert, Habib Y. Far, Tim Flood, Kenneth Fogarty, John F. Goehl, Michael Goldenberg, Mark Kalpan, G.R.A.20 Problems Group, Brian Hogan, Tom Jager, Kenneth Korbin, Victor Y. Kutsenok, Elias Lampakis, Kee-Lai Lau, Peter W. Lindstrom, Robert S. Lubarsky, David E. Manes, Allen J. Mauney, Northwestern University Math Problem Solving Group, Rolf Richberg, Fary Sami, Heinz-Jürgen Seiffert, Raul A. Simon, Albert Stadler, Daniel Stock, Paul Weisenhorn, Chu Wenchang, Di Claudio Leontina Veliana, Doug Wilcock, Hongbiao Zeng, Li Zhou, Sung Soo Kim, Glenn Bookhout, David Gove, Jerrold W. Grossman, Eric Harclerode, Jacob McMillen, Mike Pinter, Robert P. Sealy, Harry Sedinger, Furman Smith, Jon Stadler, Patrick A. Staley, Mihai Manea, Fernando Barrera, Mark Kaplan, H. T. Tang, Ali Nabi Duman, Peter J. Gressis, Costas Efthimiou, Peter Hilton, Eugene Herman, John A. Baker, Natasha Borjemscaia, A. K. Desai and Bruce Ebanks · Mathematics Magazine · 2005