07/07/2019
INEQUALITY IN TRIANGLE-1189
Proposed by Florin Voinea-Romania INEQUALITY IN TRIANGLE-1189 Solution 1 by Marian Ursarescu-Romania, Solution 2 by Marian Dinca-Romania, Solution 3 by…
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05/18/2019
SOLUTION JP235-RMM SPRING EDITION 2020
Proposed by Marian Ursarescu-Romania SOLUTION JP235 Solution 1 by Tran Hong-Dong Thap-Vietnam, Solution 2 by Soumava Chakraborty-Kolkata-India, Solution 3 by…
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05/11/2019
SOLUTION JP228-RMM SPRING EDITION 2020
Proposed by Hung Nguyen Viet-Hanoi-Vietnam SOLUTION JP228 Solution 1 by Marian Ursarescu-Romania, Solution 2 by Tran Hong-Dong Thap-Vietnam, Solution 3…
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03/12/2019
INTEGRAL INEQUALITY-223
Proposed by Daniel Sitaru-Romania INTEGRAL INEQUALITY-223 Solution by Marian Dinca-Romania
11/28/2017
CYCLIC INEQUALITY-371
Proposed by Daniel Sitaru-Romania CYCLIC INEQUALITY-371 Solution 1 by Abdelhak Maoukouf-Casablanca-Morocco, Solution 2 by Marian Dinca-Romania, Solution 3 by Hasan…
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09/25/2017
PROBLEM 223-CUTTHEKNOTMATH
Proposed by Mehmet Sahin-Ankara-Turkey https://www.cut-the-knot.org/triangle/InradiiCircumradii2.shtml Solution 1 by Daniel Sitaru-Romania, Solution 2 by Marian Dinca-Romania, Solution 3 by Miguel Ochoa…
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08/28/2017
CYCLIC INEQUALITY-263
Proposed by Marian Dinca-Romania CYCLIC INEQUALITY-263 Solution 1 by Khanh Hung Vu-Ho Chi Minh-Vietnam, Solution 2 by Nguyen Ngoc Tu-Ha…
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05/15/2017
CYCLIC INEQUALITY-146
Proposed by Zdravco Starc-Bulgaria CYCLIC INEQUALITY-146 Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Soumava Chakraborty-Kolkata-India , Solution 3…
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05/09/2017
ELEGANT INEQUALITY-230
Proposed by Daniel Sitaru-Romania ELEGANT INEQUALITY-230 Solution 1 by Marian Dinca-Romania, Solution 2 by Tran Hong-Dong Thap-Vietnam
05/07/2017
CYCLIC INEQUALITY-136
Proposed by Hung Nguyen Viet-Hanoi-Vietnam CYCLIC INEQUALITY-136 Solution 1 by Kevin Soto Palacios-Huarmey-Peru , Solution 2 by Imad Zak-Saida Lebanon…
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