Eleven Years Mathcounts National Competition Solutions

This is a solution book for 1990 - 2000 Mathcounts National Competition Sprint and Target round problems.
Jane Chen is the author of the book "The Most Challenging MATHCOUNTS Problems Solved"- 2001-2010 National Mathcounts Solutions" officially published by Mathcounts.org.
For 1990-2000 Mathcounts National Team Round solutions: https://www.amazon.com/dp/1543272304
2000-2010 Mathcounts National Team Round solutions: https://www.amazon.com/dp/1544764421