I mentioned to a colleague that I’d bought two lottery tickets for last weeks Euromillions draw instead of my usual 1 to double my chance at winning. He said “Yeah, that’s not how it works.” I’m sure he is right – but why?
In: 7847
A single ticket has one chance in 139,838,160 to win. Two different number choices indeed double your chance, to one in 69,919,080. So, by purchasing your second ticket, you’ve gone from the chance that you’d be hit by lightning _fourteen_ times, to a paltry _seven._
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