new blog post: "On The Mathematics of Spot It!" http://joelgrus.com/2015/06/12/on-the-mathematics-of-spot-it/ …
@joelgrus that was great! (I tried to solve it on my own first, but glad I gave up quickly, because I never would have figured it out :)
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@joelgrus that was great! (I tried to solve it on my own first, but glad I gave up quickly, because I never would have figured it out :)