Christmas is the time of year when you really need solutions. Presents to buy, who to invite to parties, who to talk to at parties. And of course the biggest dilemma is for Santa himself, traversing the globe in the early hours. So much to do, so little time.
So what you need is something to make Christmas a little easier. And what better than mathematics? Because mathematics can answer all your questions, from best party configurations, to the optimum number of presents to mapping Santa's quickest route.
Or can it? Perhaps there are some things that even mathematics cannot answer.
In the Oxford Mathematics Annual Christmas Lecture Marcus du Sautoy explores the mathematics of the festive season.
The Oxford Mathematics Christmas Lecture is generously sponsored by G-Research - Researching investment ideas to predict financial markets.