The Egyptians expressed all fractions as the sum of different unit
fractions. Here is a chance to explore how they could have written
Weekly Problem 44 - 2013
If $n$ is a positive integer, how many different values for the remainder are obtained when $n^2$ is divided by $n+4$?
Congratulations to Alice who sent in a correct solution to this problem:
Congratulations to Ray who also worked on this problem and sent us the following result: