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What is Random?

How are random numbers generated, and how could it be proved - to the satisfaction of a mathematician, that a number's really random?
17 May 2013
Presented by . 

Electromagnet-iron.png

The iron is made up of lots of randomly arranged tiny magnets
Credit: 
Dave Ansell
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We were discussing on the radio today how random numbers are generated, and how could it be proved - to the satisfaction of a mathematician - that the number really is random? Evan Stanbury explains...

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