Romanian Mathematical Magazine

Monthly Archives: September 2017

09/24/2017

PROBLEM 220-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/arithmetic/algebra/CyclingInequality2.shtml Solution by proposer Published by Alexander Bogomolny-USA

09/24/2017

PROBLEM 219-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/arithmetic/algebra/CyclingInequality.shtml Solution by Ravi Prakash-New Delhi-India Published by Alexander Bogomolny-USA

09/23/2017

PROBLEM 218-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania http://www.ssmrmh.ro/2017/09/23/problem-217-cuttheknotmath/ Solution by proposer Published by Alexander Bogomolny-USA  

09/23/2017

PROBLEM 217-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/InequalityWithInRadiusAndExcenters.shtml Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Soumava Chakraborty-Kolkata-India Published by Alexander Bogomolny-USA…
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09/23/2017

PROBLEM 216-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/InequalityInTriangle9.shtml Solution by proposer Published by Alexander Bogomolny-USA

09/23/2017

PROBLEM 215-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/SitaruWithTangents2.shtml Solution 1 by proposer, Solution 2 by Kevin Soto Palacios-Huarmey-Peru, Solution 3 by Soumava Chakraborty-Kolkata-India…
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09/23/2017

PROBLEM 214-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/InequalityInTriangleHIOG.shtml Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Rozeta Atanasova-Skopje Published by Alexander Bogomolny-USA

09/23/2017

PROBLEM 213-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/AllInclusiveInequality2.shtml Solution 1 by Soumava Chakraborty-Kolkata-India, Solution 2 by proposer, Solutions 3,4,5 by Kevin Soto Palacios-Huarmey-Peru…
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09/23/2017

PROBLEM 212-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/AllInclusiveInequality.shtml Solution 1 by proposer, Solution 2 by Soumava Chakraborty-Kolkata-India, Solution 3 by Myagmarsuren Yadamsuren-Darkhan-Mongolia Published…
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09/22/2017

PROBLEM 211-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/OneSidedInequality.shtml Solution by Alexander Bogomolny-USA Published by Alexander Bogomolny-USA