What is the value of the Ramsey number R(5,5)?
Basic
7
Ṁ3252050
47%
43
10%
44
33%
45
5%
46
3%
47
3%
48
Resolves to the value of the Ramsey number R(5,5) whenever it is determined. It is known to be in the range 43–48. Informally, it is the number of people there have to be in a room that force there to be either 5 people who all know each other or 5 people, none of whom know each other. (I will extend the close date if necessary.)
Background: https://en.wikipedia.org/wiki/Ramsey%27s_theorem#Ramsey_numbers
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What is this?
What is Manifold?
Manifold is the world's largest social prediction market.
Get accurate real-time odds on politics, tech, sports, and more.
Win cash prizes for your predictions on our sweepstakes markets! Always free to play. No purchase necessary.
Are our predictions accurate?
Yes! Manifold is very well calibrated, with forecasts on average within 4 percentage points of the true probability. Our probabilities are created by users buying and selling shares of a market.
In the 2022 US midterm elections, we outperformed all other prediction market platforms and were in line with FiveThirtyEight’s performance. Many people who don't like trading still use Manifold to get reliable news.
How do I win cash prizes?
Manifold offers two market types: play money and sweepstakes.
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and can't be cashed out.Selected markets will have a sweepstakes toggle. These require sweepcash to participate and winners can withdraw sweepcash as a cash prize. You can filter for sweepstakes markets on the browse page.
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