#### EQUATION IN NATURAL NUMBERS-13

Proposed by Naren Bhandari-Bajura-Nepal EQUATION IN NATURAL NUMBERS-13 Solution by Le Van-Ho Chi Minh-Vietnam

#### INTEGRAL INEQUALITY-220

Proposed by Daniel Sitaru-Romania INTEGRAL INEQUALITY-220 Solution by Soumava Chakraborty-Kolkata-India

#### INEQUALITY IN TRIANGLE-1083

Proposed by Srinivasa Raghava-AIRMC-India INEQUALITY IN TRIANGLE-1083 Solution by Thanh Tung Vu-Nam Dinh-Vietnam

#### PROBLEM 4127-CRUX MATHEMATICORUM

Proposed by D.M.Batinetu-Giurgiu,Neculai Stanciu-Romania PROBLEM 4127-CRUX Solution by Soumitra Mandal-Chandar Nagore-India

#### PROBLEM 4074-CRUX MATHEMATICORUM

Proposed by Abdilkadir Altintas-Afyonkarashisar-Turkey PROBLEM 4074-CRUX Solution by Apostolis Manoloudis-Greece

#### LIMIT-213

Proposed by Vasile Mircea Popa-Romania LIMIT-213 Solution 1 by Oleg Turcan-Lisbon-Portugal, Solution 2 by Jerry James-Hamburg-Germany

#### LIMIT-212

Proposed by Vasile Mircea Popa-Romania LIMIT-212 Solution by Jerry James-Hamburg-Germany

#### RMM-TRIANGLE MARATHON 1001-1100

100 solved geometry problems RMM-TRIANGLE MARATHON 1001-1100 PART 1-compressed RMM-TRIANGLE MARATHON 1001-1100 PART 2-compressed

#### RMM-CALCULUS MARATHON 501-600

100 solved calculus problems RMM CALCULUS MARATHON 501-600-compressed

#### PROBLEM 4081-CRUX MATHEMATICORUM

Proposed by Daniel Sitaru-Romania PROBLEM 4081-CRUX Solution 1 by Kelvin Hong-Rawang-Malaysia, Solution 2 by Marian Ursarescu-Romania