There are four equal weights on one side of the scale and an apple
on the other side. What can you say that is true about the apple
and the weights from the picture?
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
Gurjeet from Cranford Community College
Eleanor sent in her solution to the rest
of the problem:
I guessed that there were about 25 lights in the picture. When I
counted them there were 28, but I think there are some that you
can't see behind the metal bits. My guess was quite a good one
because it was only 3 away from the real number that you can see in
the picture. It looks like there are 6 rods, and if they all have
the same number of lights then the total should be 30, so I think
there are two more lights that are hidden. The shape in the middle
is a pentagon, but one of the rods doesn't fit in with the
Thank you Eleanor and Gurjeet!