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 (   • The Boy or Girl Probability Paradox R...  ), or pinned comment, for more of an explanation about what's going on.

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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): https://amzn.to/2TY8ibO

See pinned comment for additional information.

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

https://en.wikipedia.org/wiki/Boy_or_...
https://leightonvw.com/2017/03/03/the...
https://math.stackexchange.com/questi...
https://math.stackexchange.com/questi...
https://science.slashdot.org/story/10...
http://allendowney.blogspot.com/2011/...

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