Invented by mathemagician Art Benjamin, shared by mathematician and prolific puzzle author Ian Stewart, and published by Author Garth Sundem, The World’s Greatest Mathematical Card Trick is a search to identify the four aces. Follow this simple setup and rules until you leave everyone in the room wondering how you tricked them!

  • Source: WIRED.com
  • Time Required: less than 15 minutes
  • You’ll Need: a deck of cards