We’ve been working on systematic methods to solve mathematical problems today. Have a look at the problem (http://nrich.maths.org/1177/note) and see if you can solve it. Our fastest mathematician managed it in 2 minutes and 14 seconds…and that was while working out Pi to 17 places at the same time. Here are some pictures of our efforts.*
*Some aspects of this post may have been exaggerated. But only a little bit.