PEN: Problem of the bi-week

Inside PEN (Problems in Elementary Number Theory), the Problem of the bi-week project has been launched.

  

For an idea of what all this is about, here’s what Hojoo Lee, creator of this project, said about “Problem of the bi-week“:

           “First week, you meet a problem (from PEN book) and then, next week, I’ll upload the solution file so that everyone can see the solutions, and so on.“

For details, check Problem of the bi-week on Facebook.

Or you may go directly to the project.

Happy Problem Solving!