Enter the key from Problem 9's side challenge
Wrong key. Go back and solve Problem 9 first!
The ancient Romans used letters to represent numbers.
I=1, V=5, X=10, L=50, C=100, M=1000
One of these Roman numerals represents the number 500. What letter is it?
Hint: You know I, V, X, L, C, and M. The one you need is between C (100) and M (1000)...
Go back to the main puzzle page and enter the complete code to finish!
Enter the Final Code