Unfortunately, we didn’t receive any correct solutions to #12. Perhaps less technical problems would be more fun to work with:

# Problem of the Week #12

We received several submissions to #11, but **Victor Sterling** was the only one who provided the correct answer.

Now #12 is this:

# Problem of the Week #9

Unfortunately, we didn’t receive correct solutions for the last Problem of the Week. We’re hoping that we will receive correct ones this time:

# Problem of the Week #7

Thank you very much for your participation in Problem of the Week #6. We received three correct solutions and the first prize goes to **Dylan Gale**; Brian Kieffer and Sirish Pranhan also provided correct solutions as well.

The last Problem of the Week this Fall semester is the following:

# Problem of the Week #6

Thanks for sending your solutions to Problem of the Week #5! We even had submissions from professors here (although they’re not qualified of course)! Anyway we received two correct solutions from undergraduates, and the first was **Zachary Hancock**, and the second was Brendan Caseria. Congrats to Zachary and Brendan!

# Problem of the Week #5

Thanks for participating in the previous Problem of The Week! We had a record number of submissions to the last problem, and received two correct solutions: we would like to congratulate **Zachary Hancock** for providing the first solution and also Sirish Pradhan for the second.

Now the fifth Problem of the Week is: