Members of the University’s Maths society, called SUMS, have put an end to bare branches, by calculating the amount of baubles, tinsel and lights needed, as well as the size of the essential star on top.
Department store Debenhams set the University the Christmas themed challenge to create the formulas for the perfectly decorated Christmas tree. It is available as a calculator here.

Source: http://www.shef.ac.uk/news/nr/debenhams-christmas-tree-formula-1.227810

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