What was the first (known) maths mistake?

What was the first (known) maths mistake?What was the first (known) maths mistake? External link

Thanks to Waterstones for choosing Humble Pi as a 'top 100' paperback of the year. https://www.waterstones.com/book/humble-pi/matt-parker/9780141989143 Signed copies are available at Maths Gear. It's cheaper at Waterstones, but not signed. You choose! https://mathsgear.co.uk/collections/books/produ

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