Home Base In the year 1985, the date April 25th had a unique property.  When the date was written as 4-25-1985, the number for the month and day, 425, could actually equal the year 1985. In other words, in what number base does 425 equal 1985 in base 10?
April 25, 2005
Past Problems
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	Correct Solutions
	Geroom Fierens. Bornem, Belgium Patrick McHenry. Gloucester City Schools, Gloucester, MA Adrian Atanasiu. Bucharest University, Romania Roland Vyncke. Brugge, Belgium Roger Steffens. Atlanta, GA Radu Ionescu. Montreal, Canada Tim Poe. Austin, TX Gustavo Niemeyer. Conectiva, Brasil Lisa Schechner. Schreiber High School, Port Washington, NY Mark Wintczak. Naperville, IL Frank McGartland. Saskatoon, SK., Canada Aristides Kyriakakis.  Thessaloniki.  Greece Jerrold Greenberg. New York, NY Luan Luu. CSU Long Beach, Garden Grove, CA Bob Mitchell. Normal, IL Mr. Almeida. Lawrence Junior High, Falmouth, MA Brian Hetrick. UNH, Manchester, NH Jing Liu. Dartmouth High School, Dartmouth, MA Charles Green. Miami Lakes Educational Center, Miami Lakes, FL David Shi. JLS Middle, Palo Alto, CA Jing Min Liu. Dartmouth High School, Dartmouth, MA Rebecca Lee. Dartmouth Middle School, Dartmouth, MA. Allamanis Miltiadis. Anatolia High School, Thessaloniki, Greece Mr. McNally. Carusi Middle School, Cherry Hill, NJ Sarah Chen. Marie Curie Middle School, Bayside, NY Diane Kristiansen. Westwood College, Dallas, TX Evan Durant. Dartmouth High School, Dartmouth, MA Murat Konuk. Elkins High School, Houston, TX Jerome Cherry. NAIT. Edmonton, Alberta, Canada David Wang. Don Mills C.I., Toronto, ON, Canada Alfonso Alba. WestWood College, Dallas, TX Nikita Kitaev. South Pasadena Middle School, South Pasadena, CA Cindy Sung. Duchesne Academy, Houston, TX Bar Greengrass. Lapid school, Israel Klemen Kovacic. OSZO, Kocevje, Slovenia Vlaicu Crisan. University Babes-Bolyai, Cluj-Napoca, Romania Mark Enderich. Lear Corp., Dearborn, MI Mike Osterfoss. Colorado School of Mines, Golden, CO Rohit Bollineni. Power Middle School, Farmington Hills, MI Norman Peng. Lowell High School, San Francisco, CA Tim Yales. Westland, MI Bill Croughan. Episcopal School of Acadiana, Cade, LA Jason Tripp. Westside High School, Macon, GA Rodney Clingaman. Fishers, IN Abhijeet Mumbai, Rai University, India Renita Tinsley. Westwood College, Dallas, TX Tanvi Rastogi. Bridgewater-Raritan High School, Bridgewater, NJ. Ali Chavez. Creekwood Middle School, Kingwood, TX Debra Sodie. Westwood College, Dallas, TX Peter Schaffer. Budapest University of Technology and Economics, Budapest, Hungary Ivan Pyzow. South Pasadena Middle School, South Pasadena, CA Ms. Rothermel. Rye Junior High School, Rye, NH Reno. Lawrence Junior High School, Falmouth, MA Marshall Carpenter.  Fairview High School, Boulder, CO Michael Reed. Westwood College, Dallas, TX Ashley Carter. Westwood College Dallas, TX Randy Lomas. Harvest Park Middle School Teacher, Pleasanton, CA Patrick Ream. Carusi, Cherry Hill, NJ Alex McIntire. Brookstone School Columbus, GA Haley Lewandowski. Fern Hill Elementary School, West Chester, PA Michael Dennis.Westwood College of Technology Dallas, Dallas, TX Sonny Fuller. South Shelby High School, Shelbina, MO Tenshia White.Westwood College, Dallas, TX Alex Timmler. Wauwatosa East High School, WI Eileen Zhu. Kearny, NJ Samantha Grey. Creekwood Middle School, Kingwood, TX David Fitt. Creekwood Middle School, Kingwood, TX David Friedman. Sippican Elementary School, Marion, MA Brian Napier. Kyle Priver. South Pasadena Middle School, South Pasadena, CA Aaron Irvin. Westwood College, Dallas, TX Shareef Bacchus. Hilsman Middle School Moogra Aakash. Jane Moogra School, WA Julie Yuqing Ye. Baerums Verk School, Norway Deyan Simeonov. Math School, Bourgas, Bulgaria Edmundo Veiga. Rio de Janeiro, Brazil Gordon Bockus. Wilburton High School, Wilburton, OK Zhen Shi. Windsor, ON, Canada Brian Chan. Summit Middle Schoool, Coquitlam, B.C. Canada Mohsen Taghizadeh. Amirkabir University of Technology, Iran
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 Last Updated On: 11/16/05