The Ping Pong Ball Paradox(en.wikipedia.org)
en.wikipedia.org
The Ping Pong Ball Paradox
https://en.wikipedia.org/wiki/Ross%E2%80%93Littlewood_paradox
1 comments
tl;dr: In the “ping pong ball paradox” you keep adding balls and removing one, faster and faster, finishing in a minute. Intuitively you’d expect infinitely many balls left, but depending on how you number/remove them, you can end with none (or any number you want).