How Big Is Infinity? by A.J. Crilly

The 20 Big Maths Questions

A concise, puzzle-driven tour of the strange world of the infinite, it explores how different sizes of infinity arise, why paradoxes like Hilbert’s Hotel and Zeno’s challenges matter, and how infinite processes appear in series, geometry, and probability; through short, approachable chapters and brainteasers, it builds intuition without heavy proofs and shows how seemingly impossible ideas fit together in everyday reasoning.

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