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TIRAGE GLOSSARY
By Tirage Analysis Desk · · 3 min · 🌟 featured-snippet target
Definition
Overall odds (often written "1 in N") is the probability that any given scratch-off ticket will reveal at least one winning prize of any amount, including free-ticket prizes. A game with overall odds of "1 in 3.42" means roughly one in every 3.42 tickets is a winner of some kind.
Also called: overall odds of winning, odds of winning any prize, 1 in N odds
State lotteries compute overall odds at print time by dividing the total number of tickets printed by the total number of winning tickets in the print run. Unlike EV/$, overall odds are fixed at print — they do not change as tickets are sold, because losing and winning tickets are equally likely to be sold. Our data feeds source this figure directly from each state's official game page.
Overall odds are a key input into our expected value calculations. They provide the denominator estimate (total outstanding tickets) needed to weight each prize tier's probability. A game can have poor overall odds (many losers) but strong EV/$ if the jackpot is large enough and still unclaimed.
Example
A $5 game lists "Overall chances of winning: 1 in 4.21." If 800,000 tickets were printed, approximately 190,000 are winners. The other 610,000 are non-winners. An EV/$ above 0.60 is typical for a fresh $5 game with these odds.
No. Overall odds are set at print time and are fixed for the game's lifetime. What changes is EV/$, because the remaining prize pool shifts as high-value prizes are claimed.
No. Overall odds include every prize tier — including $1 and free-ticket prizes. The odds of winning the top prize specifically are much lower, typically 1 in several hundred thousand to 1 in a few million.
Our system sources this directly from each state lottery's official game detail page, where it is required to be published by regulation in most US states.
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