The odds of winning Scratch games vary. If the odds of winning a game are 1 in 4, that doesn't mean that every fourth ticket purchased will be a winner. Overall odds are based on the entire quantity of tickets printed for the specific game indicated. The odds are calculated by taking the total number of tickets printed, divided by the number of winning tickets. The winning tickets are randomly distributed, therefore it is possible to purchase several tickets without having a winning ticket, just as it is possible to have multiple winning tickets in a row.
EXAMPLE: 1,000,000 total tickets in the game / 250,000 total tickets that are prize winners = Overall odds 4
Click here for Odds of Winning