INEQUALITY IN TRIANGLE-639 Posted on November 30, 2017 by ssmrmh Proposed by D.M.Batinetu-Giurgiu, Neculai Stanciu-Romania INEQUALITY IN TRIANGLE-639 Solution 1 by Mehmet Sahin-Ankara-Turkey, Solution 2 by Seyran Ibrahimov-Maasilli-Azerbaidian, Solution 3 by Soumava Chakraborty-Kolkata-India