Thursday assorted links:
Discrete Mathematics - An Open Introduction
🔗 https://discrete.openmathbooks.org/dmoi4.html
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Euclid's Proof that the Square Root of 2 is Irrational
Learn how Euclid proved that the square root of 2 is an irrational number.
🔗 https://www.mathsisfun.com/numbers/euclid-square-root-2-irrational.html