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If I ruled the world: Marcus du Sautoy

Understand Euclid's proof and ban people from saying "I'm bad at maths"

©Joby Sessions/Oxford University Images/Rex/Shutterstock

If I ruled the world, the first thing I would do is to make sure that everyone understood Euclid’s proof that there is an infinity of prime numbers. To some people that might seem like a strange suggestion, so let me explain. In itself, Euclid’s proof is not particularly useful for anything. But what it shows is the power of analytical thinking and the magic of mathematics. Studying Euclid would plant a seed in people’s minds that would grow into an appreciation…

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