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Prize crossnumber, Issue 20
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We talk to the Fields medallist about his life, his work and his advice to his younger self.
Beghilos
When you get tired of using your calculator for numbers, why not use it for words?
How to make: a slide rule
Make calculations easy with this simple-to-make slide rule
Page 3 model: The Duckworth–Lewis method
Meet the Duckworth-Lewis method, 23, from Lancashire