This May Be The Most Counterintuitive Probability Paradox I've Ever Seen | Can you spot the error?

WARNING: If you haven't see this paradox before (and probability isn't your thing), it may seem like math is broken here. I just want to say that it's not and it took me A LOT of thinking to finally see why. I encourage you to watch the video and see what conclusions you come to, but then check out the follow up video ( or pinned comment, for more of an explanation about what's going on.

What is the chance that a parent has two daughters, given the fact that they have two children, at least one of which is a girl named Julie?

Book that I reference (The Drunkard's Walk):

See pinned comment for additional information.

►References (note, even some of the sources don't fully agree)








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