This simply a very fun one to think about. But it could be fun to discuss in class — with math and/or statistics teachers – or others that want to think about how “magic tricks” are done. The question you’ll have is “how did he do that?” Have fun conjuring up ideas. We know one answer that is clearly “not the right one” — but if we provide it in this post, we’ll be taking away from the fun of this video. It’s about 6-minutes long — and it just whizzes by because it’s kind of spell-binding. Good luck with it! Have fun!