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Calum gets on his soap box about toy models
Easy to state, hard to prove: The Collatz conjecture
90 years later, we're still unable to prove this surprisingly simple statement
Well, well, well…
A fiendish puzzle for you to 'pour' over...
Stopping distances in the Highway Code are wrong
An easy equation to remember for your driving theory test, with dangerous consequences
Politics: a tweeting glance
What does Twitter have to do with politics?
Optimal Pac-Man
Ghostbusting with graph theory
