Mr. Sunshine tells the children they will have 2 hours of homework.
After several calculations, Harry says he hasn't got time to do
this homework. Can you see where his reasoning is wrong?
Find the exact difference between the largest ball and the smallest
ball on the Hepta Tree and then use this to work out the MAGIC
Make an estimate of how many light fittings you can see. Was your
estimate a good one? How can you decide?