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Math Help - 20.000 Bingo Cards... Just 1 winner (cheating??)

  1. #1
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    Question Probability on 20.000 Bingo Cards... Just 1 winner (cheating??)

    Hi..Im new here..and yes Im looking for someone to help me with this problem...

    There's a anual bingo game in my city, each player has a card with 15 numbers on it. The total of balls is 90.

    Every year they sell about more of 20.000 cards, and always they get only 1 winner...
    I dont know how is this possible, when they assure that the extraction of the numbers is fully tranparent and without cheating.
    They say that have a "secret formula" to make the cards for only 1 winner per time...

    can someone tell me something about that "secret formula" to make cards and not to cheat in the extraction of the numbers??...or is it just a trap well covered...

    thats all..
    thanks!
    Last edited by MarkPimi; March 25th 2011 at 09:48 AM.
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  2. #2
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    Is it possible that there is only one winner as all 20,000 cards are different? i.e. no 2 cards are the same?
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  3. #3
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    Hi pickslides..thanks for your reply...
    with only 90 numbers there can be only 6 cards uniques that assure us 1 only winner...so how can they do this for thousands of cards??..
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