Comedian and mathematical physics graduate Dara O'Briain takes a humorous look at how maths underpins everything around us, solving problems using only numbers and equations. This week's guest is David O'Doherty.

Dara O'Briain continues on his journey into the realms of pure logic. Once again he's helped by Oxford University maths professor Marcus du Sautoy and is joined by comedy guest Alex Horne.

Dara O'Briain takes a witty look at how maths underpins everything around us. Dara takes on comic Jason Byrne in a problem-solving challenge.

Brains and brawn go head to head once again as Dara O'Briain presents the light-hearted science show. Taking up Dara's problem-solving challenge here is Andi Osho.

Dara's back, proving again that mathematics can save the day in almost any circumstance. This week the Mock The Week host tackles problems that you might come across in an Italian restaurant. Comedian David O'Doherty is on hand to help with the puzzles, all set by the fiendishly logical, Oxford university professor, Marcus du Sautoy. The first conundrum comes from counting dough balls. When the menu offers a choice of 6, 9 or 20 dough balls, Marcus wants to know the largest amount of dough balls that cannot be ordered.

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