Copyright © University of Cambridge. All rights reserved.

## 'Beads' printed from http://nrich.maths.org/

Three beads are threaded on a circular
wire and are coloured either red or blue.

Can you find all four different combinations?

You now repeat the following actions over and over again:

- between any two beads of the same colour put a red
bead
- between any two beads of different colours put a blue
bead
- then remove the original beads.

Describe what will happen to each of the combinations.

**If you can see this message Flash may not be working in your browser**
**Please see http://nrich.maths.org/techhelp/#flash to enable it.**