Age 7 to 11 Challenge Level:
We haven't received any solutions to this problem and of course what you find out might depend on what you decided to investigate.
However, we would love to hear about anything you have discovered. Share your ideas by emailing firstname.lastname@example.org Please don't worry that your solution is not "complete" - we'd like to hear about anything you have tried. Teachers - you might like to send in a summary of
your children's work.