# Monthly Archives: September 2006

## Judging a Book by Its Cover

That’s what I occasionally do when I pick out books in the library. I look at those with nice covers, or those with familiar covers (for example the Contemporary Maths series from AMS), then I look at the title and … Continue reading

Came across a funny little problem last week. Explain the following: For primes $p \ge 7$ , the decimal expansion of $\frac{1}{p}$ is non-terminating. Is there a formula for the number of repeating digits? $\frac{1}{7} = 0.\overline{142857}$ 6 digits [tex]\frac{1}{11} … Continue reading