You may also like

problem icon


Three children are going to buy some plants for their birthdays. They will plant them within circular paths. How could they do this?

problem icon

Triangle Animals

How many different ways can you find to join three equilateral triangles together? Can you convince us that you have found them all?

problem icon

The Hair Colour Game

The class were playing a maths game using interlocking cubes. Can you help them record what happened?


Stage: 1 Challenge Level: Challenge Level:1

My coat has three different buttons.
Sometimes, I do them up starting with the top button.  Sometimes, I start somewhere else.
How many ways can you find to do up my coat?
How will you remember them?
Do you think there are any more?  How do you know?

This problem was inspired by an idea of Bernard Murphy.