"There, a robotic voice told them to find the prime numbers in the original image. By multiplying them together, the solvers found a new prime"
That made my eyes bleed, but OA has given me a superb Maths revision lesson for some bored teenagers. I'd already planned to get them decoding a ROT13 text by reference to letter frequencies, and now this 'quest' as well. Nice.
That made my eyes bleed, but OA has given me a superb Maths revision lesson for some bored teenagers. I'd already planned to get them decoding a ROT13 text by reference to letter frequencies, and now this 'quest' as well. Nice.