Each month, a new mathematical challenge will be posted. The first student who submits a correct, rigorous, and well-explained solution will be invited for a coffee/tea discussion on campus. You should be prepared to explain your reasoning in person and solve a small variation of the original problem. A correct answer alone is not sufficient - what matters is understanding the mathematics. Please, send a clear and well-explained solution (PDF format preferred) to statar@alfaisal.edu
Think clearly. Write precisely.