These secondary problems have not yet been solved. Can you be the first?
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
Take a look at the video and try to find a sequence of moves that will untangle the ropes.
It would be nice to have a strategy for disentangling any tangled ropes...
Can you tangle yourself up and reach any fraction?
Think of a number and follow my instructions. Tell me your answer, and I'll tell you what you started with! Can you explain how I know?
I added together some of my neighbours house numbers. Can you explain the patterns I noticed?
The Number Jumbler can always work out your chosen symbol. Can you work out how?