1. Dara O'Briain's School of Hard Sums
2. Mathematics

Guest comedians Marcus Brigstocke and Andrew Maxwell pit their common sense against Dara's mathematically-minded brain as they battle it out to solve puzzles and problems set by Professor Marcus du Sautoy. Today's theme is, 'How Maths Can Get You Stuffed'.

Guest comedians Stephen Mangan and Miles Jupp pit their common sense against Dara's mathematically-minded brain as they battle it out to solve puzzles and problems set by Professor Marcus du Sautoy. Today's theme is, 'How Maths Can Be Your Search Engine'.

Guest comedians Susan Calman and David O'Doherty pit their common sense against Dara's mathematically-minded brain as they battle it out to solve puzzles and problems set by Professor Marcus du Sautoy. Today's theme is, 'How Maths Can Keep the Peace'.

Guest comedians Marcus Brigstocke and Josh Widdicombe pit their common sense against Dara's mathematically-minded brain as they battle it out to solve puzzles and problems set by Professor Marcus du Sautoy. Today's theme is, 'How Maths Gets You More Bang for Your Buck'.

Andrew Maxwell And Mark Watson - Guest comedians Mark Watson and Andrew Maxwell pit their common sense against Dara's big maths brain as they battle it out to solve puzzles and problems set by Professor Marcus du Sautoy. Today's theme is, 'Does Crime Add Up?'.

Guest Comedian Andi Osho pits common sense against Dara's big maths brain as they battle it out to solve real life problems. Professor Marcus Du Sautoy sets the questions. Today's theme is, 'Maths and sport'.

Guest Comedian Andi Osho pits common sense against Dara's big maths brain as they battle it out to solve real life problems. Professor Marcus Du Sautoy sets the questions. Today's theme is, 'You can't argue with logic'.

Guest Comedian Simon Evans pits common sense against Dara's big maths brain as they battle it out to solve real life problems. Professor Marcus Du Sautoy sets the questions. Today's theme is, 'Finding your way'.

Guest Comedian Jason Byrne pits common sense against Dara's big maths brain as they battle it out to solve real life problems. Professor Marcus Du Sautoy sets the questions. Today's theme is, 'How maths can stop you getting screwed'.

Guest Comedian Alex Horne pits common sense against Dara's big maths brain as they battle it out to solve real life problems. Professor Marcus Du Sautoy sets the questions. Today's theme is, 'Location, Location... Maths'.

Guest Comedian Alex Horne pits common sense against Dara's big maths brain as they battle it out to solve real life problems. Professor Marcus Du Sautoy sets the questions. Today's theme is, 'How maths saves lives'.

Guest Comedian David O'Doherty pits common sense against Dara's big maths brain as they battle it out to solve real life problems. Professor Marcus Du Sautoy sets the questions. Today's theme is, 'Positions, and how maths can help you find the best ones'.

Dara O'Briain's School of Hard Sums is a classic battle of brain versus brawn. And two university maths students also compete against Dara, to keep him on his toes. Which method will triumph? Fiendish real world science problems are tackled in studio in two very different ways - rather brainy maths and rather less brainy trial and error.

In the final episode, Marcus enters the strange world of what happens next. His journey begins with the lunar eclipse - once thought supernatural, now routinely predicted through the power of the code. But more intriguing is what the code can say about our future.

Starting at the hexagonal columns of Northern Ireland's Giant's Causeway, Marcus du Sautoy discovers the code underpinning the extraordinary order found in nature - from rock formations to honeycomb and from salt crystals to soap bubbles.

In an intriguing three-part series, Professor Marcus du Sautoy goes in search of a mysterious code: the numbers, shapes and patterns that govern our world. From the delicate architecture of our veins to the startling beauty of the night sky, numbers are everywhere.

Comic Alan Davies attempts to answer the proverbial question: how long is a piece of string? But what appears to be a simple task soon turns into a mind-bending voyage of discovery where nothing is as it seems. An encounter with leading mathematician Marcus du Sautoy reveals that Alan's short length of string may in fact be infinitely long. Ultimately, Alan finds that measuring his piece of string could - in theory at least - create a black hole, bringing about the end of the world.

Tells the dramatic story of a pioneering group of mathematicians who developed fractals from a curiosity that few took seriously to an approach that is touching nearly every branch of understanding, including what happened after the Big Bang and the ultimate fate of our universe.