Romanian Mathematical Magazine

PROBLEM 824-THE PENTAGON JOURNAL

12/05/2018

PROBLEM 824-THE PENTAGON JOURNAL

Proposed by Pedro Pantoja-Brazil SOLUTION 824 Solution by Khanh Hung Vu-Vietnam

11/18/2018

ELEGANT INEQUALITY-195

Proposed by Daniel Sitaru-Romania ELEGANT INEQUALITY-195 Solution by Khanh Hung Vu-Vietnam

11/18/2018

ELEGANT INEQUALITY-194

Proposed by Daniel Sitaru-Romania ELEGANT INEQUALITY-194 Solution 1 by Tran Hong-Vietnam, Solution 2 by Khanh Hung Vu-Vietnam

05/08/2018

ELEGANT INEQUALITY-128

Proposed by Daniel Sitaru-Romania ELEGANT INEQUALITY-128 Solution by Khanh Hung Vu-Ho Chi Minh-Vienam

04/02/2018

HUNDREDS OF CIRCLES

Proposed by Francisco Javier Garcia Capitan-Spain HUNDREDS OF CIRCLES Solution by Khanh Hung Vu-Ho Chi Minh-Vietnam

03/12/2018

SYSTEM-19

Proposed by Bogdan Rublyov-Ukraine SYSTEM-19 Solution by Khanh Hung Vu-Ho Chi Minh-Vietnam

03/07/2018

FUNCTIONAL EQUATION-7

Proposed by Marian Ursarescu-Romania FUNCTIONAL EQUATION-7 Solution by Khanh Hung Vu-Ho Chi Minh-Vietnam

03/05/2018

SHAN HE WU’S INEQUALITY

Proposed by Shan He Vu-China SHAN HE WU’S INEQUALITY Solution 1 by Khanh Hung Vu-Ho Chi Minh-Vietnam, Solution 2 by…
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03/03/2018

CONTRAHARMONIC MEAN

Proposed by Abdilkadir Altintas-Afyonkarashisar-Turkey CONTRAHARMONIC MEAN Solution by Khanh Hung Vu-Ho Chi Min-Vietnam

02/27/2018

GEOMETRIC PROBABILITY-1

Proposed by Daniel Sitaru-Romania GEOMETRIC PROBABILITY-1 Solution by Khanh Hung Vu-Ho Chi Minh-Vietnam