Guest comedians Susan Calman and Richard Herring 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 Feel the Force'.

Guest comedians Susan Calman and Richard Herring 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 Feel the Force'.