Sums of Powers - A Festive Story
Stage: 3 and 4
Article by Theo Drane
Published November 2006,December 2006,February 2011.
On the twelfth day of Christmas, my true love gave to me.. .
How many gifts?
But that's easy; all you have to do is add up the numbers from one to twelve.
That sounds easy, but what if the last line had been... fifty drummers drumming?
Isn't there a better way than huddling over your calculator?