# Bingo — Quick Reference

## How it works

Mark called numbers and complete the required pattern. Check claiming deadlines and prize sharing. A share of a prize may be smaller than the ticket cost.

## The key numbers

- **Return and fees:** Game-specific. Check the total price, participation fee, prize fund and sharing rules.
- **Expected share example:** If 200 cards have equal expected shares of a fixed prize fund, 10 cards have a 10/200 = 5% expected share. This does not universally mean a 5% chance of any win.
- **Without-replacement draw:** After one of 75 fair balls is removed, each remaining ball has a 1-in-74 chance of being next. The ball already called has zero chance of immediately repeating.

## One thing to know

People can own multiple cards. A smaller headcount does not by itself establish your win probability or a better return: card count, patterns, sharing, prices and prizes all matter.

## The math in plain English

If a simplified game collects $1,000 in total payments and fully pays $800 in prizes, with no other prizes or rollovers, 20% of those payments is not returned through the prize fund. This is aggregate arithmetic, not a universal operating model or a promise about an individual player's results.

## Sources and scope

[Gambling Commission: how bingo is defined](https://www.gamblingcommission.gov.uk/licensees-and-businesses/guide/how-bingo-is-defined) explains the fee/stake distinction in Great Britain. The numerical examples above are stated mathematical models. Checked September 5, 2026.

[Full Bingo guide](https://www.playbookrg.com/brand/content/games/bingo/) · Playbook RG · Free to copy and adapt under CC0. External sources have their own terms.