Minimum Number of Tickets For A Match
It is a hard, in most cases open, mathematical problem to calculate the minimum number of tickets one needs to purchase to guarantee that at least one of these tickets matches at least 2 numbers. In the 5-from-90 lotto, the minimum number that can guarantee a ticket with at least 2 matches is 100.
Read more about this topic: Lottery Mathematics
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—Barbara Ehrenreich (20th century)
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