About this document
1986 IMO Problems and Solutions by Chhorvorn Vann is a document available to read on EtoBox.
1) Show that for any positive integer d not equal to 2, 5, or 13, one can find distinct integers a and b from the set {2, 5, 13, d} such that ab - 1 is not a perfect square. 2) Prove that if a point P rotates around the vertices of a triangle A1A2A3 such that after 1986 rotations it returns to its initial position, then the triangle A1A2A3 must be equilateral. 3) Determine whether repeatedly performing an allowed operation on the integers assigned to the vertices of a regular pentagon will necessarily co
- Author
- Chhorvorn Vann
- Language
- EN