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8 votes
1 answer
585 views

One flip coin game

Nate has $n \geq 2$ coins $\{C_i\}_{0 \leq i \leq n-1}$ that each turn up heads with probability $\frac{i}{n-1}$ each, but he is not sure which ones are which. He has \$1 with which to bet with. On ...
Nate River's user avatar
  • 6,205
9 votes
1 answer
257 views

Higher or lower? (#2)

$N \geq 2$ players play a game - at the start of the game, they are each given independently and uniformly a number from $[0, 1]$. On each round, they are to guess whether their number is higher or ...
Nate River's user avatar
  • 6,205
19 votes
2 answers
2k views

Higher or lower?

Consider the following game - I draw a number from $[0, 1]$ uniformly, and show it to you. I tell you I am going to draw another $1000$ numbers in sequence, independently and uniformly. Your task is ...
Nate River's user avatar
  • 6,205
8 votes
1 answer
522 views

One step forward, one step back

$N \geq 2$ players play a cooperative game on the integers $\mathbb Z$. All of them start from $0$. At each turn, they are simultanously given the same yes or no question to answer. The questions ...
Nate River's user avatar
  • 6,205
8 votes
2 answers
572 views

Optimally betting a beta-biased coin

This question is inspired by How to optimally bet on a biased coin? by Nate River but generalized slightly. I decided the generalization might be interesting enough to be its own question. A number $p$...
Will Sawin's user avatar
  • 148k
1 vote
1 answer
285 views

Is there an equilibrium for this non-zero-sum game?

The game $G(N,M)$ is played: $N$ ($N\geq 2$) is the number of players, labeled $1$~$N$. In the beginning they have a pot with some chips in it. Players move alternatively in the order from $1$ to $N$....
Eric's user avatar
  • 2,619
3 votes
0 answers
72 views

Random Two-Player Asymmetric Game

About half a year ago I asked a question on MSE about a random two player game. At the time, the question received some attention and some progress was made, but was not resolved completely. I have ...
DreamConspiracy's user avatar
1 vote
0 answers
80 views

What is the Bruss-Yor concept of no information?

A few years ago, a question related to a paper of Thomas Bruss and Marc Yor on the so-called last arrival problem received some attention on this forum. What I'd like to know now is: What are the ...
Johan Wästlund's user avatar
4 votes
1 answer
427 views

What's the best betting strategy to double money if we have $\delta$ advantage?

Suppose that I am very skilled in a gambling game, and any day that I bet $x$, I get back $2x$ with probability $\frac 12+\delta$ (and nothing with probability $\frac 12-\delta$). My goal is to double ...
domotorp's user avatar
  • 18.9k