Correct Solutions by,
- Toshihiro Shimizu Kawasaki, Japan
- Albert Stadler Herrliberg Swıtzerland
- Choi Min Kyu South Korea
- Henrık Aberg Gothenburg Sweden
- Farid Lihyan Atlantic University USA
- Hüseyin Yiğit Emekçi Özel Ege Lisesi
- Recep Gökdereli
- Ahmed Erçıkdı Ankara Fen Lisesi
- George Tridimas Cardiff University, UK
- Oğuz Can Duran Bilkent University
- Mustafa Burak Topal İstanbul
- Mesut Yiğit Genbion ve Genimmun
- Roger Bengtsson Lund, Sweden
- Mümtaz Ulaş Keskin Erciyes University
- Metin Can Aydemir Bilkent University
Solution: http://www.fen.bilkent.edu.tr/~cvmath/Problem/2308a.pdf