Thread: 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!

Is it possible that there is only one winner as all 20,000 cards are different? i.e. no 2 cards are the same?

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??..