| 1. | Divisibility Tests | | | Jim Loy explains the divisibility rules up to 11, including a detailed study of 7.
www.jimloy.com |
| 4. | Divisibility Tests | | | From the NRICH Maths Project Cambridge, England. Dr. Tim Rowland explains the smaller rules and looks at the rules to 7, 11, 13, and 19.
www.nrich.maths.org.uk |
| 5. | Divisibility Tests | | | From the Furman University Electronic Journal of Undergraduate Mathematics. Apoorva Khare's paper is available as an abstract, DVI, and PostScript.
math.furman.edu |
| 6. | Digital Divisibility Tests | | | From Carlos Rivera's Prime Puzzles and Problems collection. Carlos asks for the general divisibility rules for any prime number.
www.primepuzzles.net |
| 7. | The Anti-Divisor | | | Introduction to unbiased non-divisor and using it in mathematical proofs.
www.users.globalnet.co.uk |
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