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Maths in a minute: The information paradox
Explore a mystery that intrigued Stephen Hawking until the end of his life.
With just a few months to go until the UEFA European Cup, here's how you can make your office sweepstake a lot fairer and more exciting.
After 2000 years of searching we only know of 51 perfect numbers and they're all even. What else do and don't we know about these rare and precious jewels of maths?