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Do scratch off lottery tickets work?

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Scratch off lottery tickets will tell you approximately how often the tickets are winners. They might say "odds of winning are 1:4.3". That means that out of every 43 tickets sold, approximately 10 will pay prizes. In other words, in a game with 1:4.3 odds about 3 out of 4 tickets pay no prizes.
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Intro to Scratch-Off Tickets and How to Win!



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