BNPS.co.uk (01202) 558833<br /> Pic: Bonhams/BNPS<br /> <br /> A fascinating letter by a young Alan Turing analysing the probabilities of 'breaking the bank' in Monte Carlo has sold for almost £100,000.<br /> <br /> Almost a decade before he cracked the Enigma code, the genius mathematician used a myriad of equations to assess the chances of winning at roulette.<br /> <br /> He was prompted to do so after the father of a close school friend revealed to him his successful gambling past.
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