Logic

With quantum computing, information is ostensibly held in 'qubits' that can exist in two states at the same time

Smullyan was one of a kind: a mathematician and maker of puzzles, but a logician above all

The good thing about online puzzles is that there are sites that use videos and explain the logic like a good teacher would, writes Shekhar Bhatia

Alex Bellos takes an entertaining and quirky look at the mathematical patterns in our everyday lives