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Pupils from Town Close House in Norwich sent in these pictures of the work done by many of the pupils working together. Well done, some lively ideas.



test
town 1
Town 2
town 3
twon 4

Just to finish and say that there were a lot of good solutions. I particularly liked the solution from Amy from Archbishop Beck's chool. She suggested that the odds and evens were separated so in a $3x3$ square the houses went $1 ,3, 5, 7, 9, 11, 12, 10, 8, 6, 4, 2$ clockwise around the tiny square!

 

James also solved the problem in very creative way.   He says:

Would $28$ be an acceptable answer if the terraces were $1-7$ and opposite $8-14$ then on the sides $15-21$ and opposite that $22-28$?
It doesn't say the house numbers have to run in order. 
 

You're right, James, we didn't say that the house numbers were in numerical order so I think your solution would definitely work.  Well done!