US woman wins multi-million dollar lottery four times
An American woman has won multi-million dollar jackpots four times between 1993 and 2010.
Joan Ginther, who got a PhD in statistics from Stanford university, has amassed a fortune of about $17.9m (£12m).
Nathaniel Rich has been investigating her story for Harper's magazine and tells Radio 5 live's Up All Night how he thinks she's got lucky.
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