Here's a great explanation: https://mathigon.org/course/probability/monty-hall https://mathigon.org/course/probability/monty-hall Had it in a browser reading l

Here's a great explanation: https://mathigon.org/course/probability/monty-hall https://mathigon.org/course/probability/monty-hall Had it in a browser reading list (that I'd forgotten was there), and came across it by chance yesterday.