In a mathematical competition, in which 6 problems were posed to the participants, every two of these problems were solved by more than 2/5 of the contestants.
Moreover, no contestant solved all the 6 problems.
Show that there are at least 2 contestants who solved exactly 5 problems each.

source: IMO 2005

Security personnel can also ensure the smooth flow of the event by managing entrances security guards california exits, and monitoring for suspicious activities. Businesses that hire security guards reduce their liability risks in case of incidents like theft or assault.

Posted by Bradley Bauer on 2024-10-21 23:50:19