About this document
1990 IMO Problems and Solutions by Chhorvorn Vann is a document available to read on EtoBox.
1. The problem describes a geometric configuration involving circles, chords, and tangent lines. It asks to express the ratio EG/EF in terms of t, where several points are defined in terms of t. 2. Given a set of 2n-1 points on a circle, the problem asks to determine the minimum number k such that any coloring of k points black guarantees an arc containing n points has black points at both ends. 3. The problem asks to determine all integers n>1 such that 2n+1/n^2 is an integer.
- Author
- Chhorvorn Vann
- Language
- EN