This paper provides a simple analysis of data available online concerning the Euromillions lottery. We show that the data support a model where only a fraction of the bettors convince other people to start playing. We can estimate how large this fraction is and what the number of new bettors brought into the game is. Also we found that bettors do not play randomly, and that consequently there is available information that any bettor can use in order to increase his expected returns.

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