Monty Hall problem explained. Visit https://brilliant.org/Newsthink/ to start learning STEM for FREE, and the first 200 people will get 20% off their annual premium subscription. Newsthink is produced and presented by Cindy Pom https://twitter.com/cindypom Grab your Newsthink merch here: null Thank you to our Patrons, including Igli Laci, Ronil Patel, Austin Grant, Tom Eng, Neo Ge, Will Lathrop Support us on Patreon: https://www.patreon.com/Newsthink Thank you to Parade Magazine for permission to use their images: https://parade.com/ Thumbnail source: Marilyn vos Savant photo courtesy of: Ethan Hill Sources: 6:29 Washington University in St. Louis photo Doc2129, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0 via Wikimedia Commons