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    In the national lottery lotto, what is the minimum number of tickets you would have to buy to guarantee a win of £10 (you win £10 if you match three numbers)?
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    My first inclination is 49C3 divided by 6C3

    But they pick 6 too don't they

    Hmmmmmm
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    So, the odds are 1 in 56.7

    But buying 57 does not guarantee

    Buying 9212 would ... But I know it is lower than that
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    Has anyone had any further thoughts?
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    (Original post by nohomo)
    Has anyone had any further thoughts?
    According to this it is an unsolved problem, and the minimum number is between 87 and 163. There is a further link from there.
 
 
 
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Updated: January 3, 2013
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