Recreations
- 283
- Am I in Pi
- Determines where your birthday first occurs in PI. Checks the first 1,254,543 digits of PI.
- 284
- Billion Digit Pi
- Billion digits of Pi for download. Search for birthday dates in Pi. Introduction to maths related to Pi. Simple description of how Pi is calculated.
- 285
- Ramanujan, Modular Equations, and Approximations to Pi or How to compute One Billion Digits of Pi
- Explains and compares several formulas for evaluating this large number of numerical places for pi. Includes complete list of digits.
- 287
- Search for strings within Pi
- Searches for any string of digits (up to 120 of them) in the first 100 million digits of Pi.
- 288
- Search within Pi
- Search in the first four billion binary digits of Pi for a string and links to further information about Pi.
- 291
- Archimedes And The Computation Of Pi
- Java applets illustrating Archimedes' construction graphically and interactively.
- 294
- A Collection of Math-Olympiad Problems
- Problem sets from international and national mathematics olympiads.
- 296
- Problem Writing For Mathematics Competitions
- Mathematics problems for middle school and high school math competitions with topics range from algebra and geometry to probability and trigonometry.
- 297
- Prof. W. Kahan's Notes and Problems
- Large archive of problems and solutions from Professor Kahan's Putnam Problems Practice Seminar.
- 298
- Singapore International Mathematics Olympiad
- Training resources include problems and partial solutions.