Ellie from St Michael's School wrote:
I was thinking before I started, and what I was thinking was I should have the biggest numbers at the bottom. For my first solution, I put a 1 at the top and placed and 3 and 4 in the middle. The 5, 2 and 6 then fit into the bottom.
Then I tried to put a 2 on the top and had 3 and 5 below in the middle. The 4, 1 and 6 fit into the bottom.
After that, I tried a 3 at the top and placed 2 and 5 in the middle; 4, 6 and 1 remaining into the bottom line.
Martí from Thau, Barcelona in Spain sent in these:
2 3 3
5 3 4 1 5 2
6 1 4 2 6 5 1 6 4
Nicholas from GSIS in Hong Kong sent in this one:
Kaustab Roy from Vibgyor High in India sent in the following:
I solved find the difference problem. I made four different solutions for the problem and without my parent's help.
Thank you for those solutions, I wonder if that's all there are?