Hacker News
- What the Tortoise Said to Achilles https://www.math.dartmouth.edu/~matc/Readers/HowManyAngels/Achilles.html 6 comments
- Seven Puzzles You Think You Must Not Have Heard Correctly (2006) [pdf] https://www.math.dartmouth.edu/~pw/solutions.pdf 139 comments
- The complete works of Leonhard Euler available online http://www.math.dartmouth.edu/~euler/ 5 comments
- Seven Puzzles You Think You Must Not Have Heard Correctly http://www.math.dartmouth.edu/~pw/solutions.pdf 38 comments