All The Counting Numbers The sequence of numbers 12345678910111213...997998999 is found by writing the counting numbers 1, 2, 3, ..., 999 in order. What would be the 1998th digit from left?
June 20, 2005
Past Problems
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	Correct Solutions
	Timothy Yales. Westland, MI Radu Ionescu. Montreal, Quebec, Canada Craig Sidell. New York, NY Roland Vyncke. Brugge, Belgium Anthony Pabillano. Flour Bluff Junior High, Corpus Christi, TX Frank McGartland. Saskatoon, SK., Canada Jerrold Greenberg. New York, NY Ilir Dema. Toronto, Ontario, Canada Brian Hetrick. UNH, Manchester NH Jerome Cherry. NAIT. Edmonton, Alberta, Canada Allamanis Miltiadis. Anatolia High School, Thessaloniki, Greece Aristides Kyriakakis.  Thessaloniki, Greece Betsy Price. Asheville Christian Academy, Asheville, NC Phillip Ai.  Warnsdorfer Elementary School, East Brunswick, NJ Richard Morris. Chillicothe, OH Harrison Jones. Britt David Elementary, Columbus, Ga Mark Wintczak. Naperville, IL Omid Kohannim. UCLA, Los Angeles, CA Norman Peng. Lowell High School, San Francisco, CA Sarah Chen. Marie Curie Middle School, Bayside, NY Jake Cheng. Rutgers School of Engineering, Bridgewater NJ Drug Marata. Korenovsk, Russia Zhen Yu Shi. Vincent Massey S.S., Windsor, ON., Canada Diane Kristiansen. Westwood College, Dallas, TX Evan Durant. Dartmouth High School, Dartmouth, MA Adrian Atanasiu. Bucharest University, Bucharest, Romania Giuseppe Giannone. Mantova, Italy Alireza Rezvani Faezifar. Tehran, Iran Vlaicu Crisan. Cluj-Napoca, Romania Vicki Anderson. Dornoch Academy, Dornoch, Scotland Akhil Rajput. University of Pune, Pune, India Goulas Dimitris. NBG, Larissa, Greece Eileen Zhu. Kearny, NJ Danny Avila. Dartmouth High, Dartmouth, MA Eugene Roytman. New York, NY Tara Franz. Maple Ridge, BC, Canada Anna Li. Sandburg Middle School, Anoka, MN Mike Osterfoss. Colorado School of Mines, Golden, CO Bekezhan Nurkhaidarov. Reichle School Dillon, MT Austin Rosel.  Austin, TX Daniel Adams. BYU, Provo, UT Partha Majumdar. Kolkata, India Brian Goodwin. ACT Department of Education, Canberra, ACT, Australia Louie Washington. Memphis, TN Cindy Sung. Duchesne Academy, Houston, TX Panagiotis Agiakloglou. Athens, Greece Ron Decock. John Taylor Collegiate, Winnipeg, MB Bar Greengrass. Lapid School, Israel Tim Poe. Austin TX Iain Madden. Dornoch Academy, Dornoch, Scotland Aditya Kawatra. IIT Delhi, India. Shengzhi Li. Shrewsbury High School, Shrewsbury, MA Akshay Save. Greenwood Lakes Middle School, Lake Mary, FL Albert Zhou.  Scott Middle School, Lincoln, NE Grace Lu. Miller Elementary School, Canton, MI
	48% of respondents successfully answered this problem.

 

 Last Updated On: 11/16/05