All of the tricks in this feature seem magical, but it's mathematics that makes them work. Figure out the maths behind the tricks, and amaze your friends and family with your mathematical wizardry!

problem
The Number Jumbler
The Number Jumbler can always work out your chosen symbol. Can you work out how?

problem
Your number is...
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?

problem
Your number was...
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?

problem
Twisting and turning
Take a look at the video and try to find a sequence of moves that will untangle the ropes.

problem
More twisting and turning
It would be nice to have a strategy for disentangling any tangled ropes...




list
Mathematical wizardry
The tasks in this feature all contain tricks that use maths, not magic, to make them work!