The following problem was posed in the March 2025 issue of Crux Mathematicorum. Solution to MA311 by Srikanth and Achudhan. Authors: R.Achudhan is a 9th grader who is enrolled in Target RMO 25 at Mudhitha Maths Academy ,Chennai. He loves solving problems especially non-routine kind. His love for mathematics and problem solving has kindled his […]
“One of the endearing things about mathematicians is the extent to which they will go to avoid doing any real work.” –Matthew Pordage In this blog post, we discuss the definition and properties of inversion, suggest a few configurations, outline the solution to a sample problem, and conclude with a few exercises. Inversion: A recap
This post contains a unique mix of geometry problems with diverse techniques: Angle chasing, power of a point, complex numbers, inversion and Euclidean transformations. The solutions of some of these problems are not available elsewhere in the internet. I believe that since I tried searching a lot before rolling my sleeves and attempting them. I used this set in INMO training camp 2024-25 at Bangalore, Bhopal and Chennai. Enjoy!
