Categories
- Book & Article Reviews (3)
- Education (8)
- Mathematics (72)
- Algebra (6)
- Calculus (10)
- Combinatorics (26)
- Foundations (4)
- Games (7)
- Geometry (11)
- Logic (9)
- Probability (6)
- Ramsey Theory (3)
- Set Theory (8)
- Topology (11)
- Wednesday Problem (40)
- Meta (15)
- Philosophy (15)
- Popular (7)
- Recreation (35)
Search Walks on Mind
Like this blog?
- New webpage at www.vadimkulikov.org March 24, 2017
- (Ir)rational Behavior of Calculation October 18, 2011
- The Product of Topological Spaces Does Not Obey Cancellation October 12, 2011
- Wild Embeddings October 11, 2011
- Progress October 4, 2011
- Class-metric August 24, 2011
- Intellectual Lazyness August 22, 2011
- Time Limit: One Minute! August 17, 2011
- Douglas Hofstadter: I Am a Strange Loop. August 15, 2011
- 0.999999……=1? (continuation) July 10, 2011
- Walks on Planets July 5, 2011
- 0.999999….. = 1? July 3, 2011
- Prisoners’ problem 6 June 29, 2011
- I am back! June 28, 2011
- A non-associative “group” March 21, 2011
- Why I haven’t blogged March 21, 2011
- Doodling with Fractals and Persistent Worms. January 2, 2011
- Five groups November 23, 2010
- Splitting A Rectangle November 17, 2010
- Sphere November 10, 2010
Tags
Archives
- March 2017 (1)
- October 2011 (4)
- August 2011 (4)
- July 2011 (3)
- June 2011 (2)
- March 2011 (2)
- January 2011 (1)
- November 2010 (5)
- October 2010 (6)
- July 2010 (4)
- June 2010 (4)
- May 2010 (2)
- April 2010 (5)
- March 2010 (11)
- February 2010 (7)
- January 2010 (10)
- December 2009 (11)
- November 2009 (7)
Monthly Archives: April 2010
Prisoners’ problem 4
The rules are as in the previous problem, but this time there are only 100 prisoners. How should they do so that 50 of them certainly survives? 3/5
Posted in Combinatorics, Mathematics, Recreation, Wednesday Problem
Tagged Prisoners' problems
Leave a comment
Prisoner’s problem 3
Please comment your solutions, questions and remarks.. There are infinitely many prisoners in a prison. The prisoners are taken to the yard and everyone is given a hat which is either black or white. No one knows the colour of … Continue reading
Posted in Combinatorics, Mathematics, Recreation, Set Theory, Wednesday Problem
Tagged Prisoners' problems
2 Comments
Prisoner’s problem 2
Please comment your solutions, questions and remarks.. Consider a prison with several millions prisoners. The head of the prison arranges the following challenge to the prisoners. One prisoner at a time will be called to a room with a lamp. … Continue reading
Posted in Mathematics, Probability, Recreation, Wednesday Problem
Tagged Prisoners' problems
2 Comments
Prisoner’s problem 1
Please comment your solutions, questions and remarks.. We are going to have several prisoner problems! Better solve them before you end up in jail. There are 2010 prisoners in the prison. One day the chair of the prison gathers the … Continue reading
Posted in Combinatorics, Mathematics, Recreation, Wednesday Problem
Tagged Prisoners' problems
5 Comments