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We haven't received any solutions to this one yet. Do let us know if you come up with anything.We have, however, received an investigation created by Ciara and Lily from Gresham Primary School, which has links to this challenge. They say:
If you need to save time for yourself or you would like to look at the kinds of things that happen here I've printed for you the results for the sum ( 1 up to 8)