Ball of Confusion

TV maths star Johnny Ball presents brain-teasers from his regular slot on his daughter Zoe's Radio 2 show. Ball of Confusion is designed to twist your brain into enjoyable knots of empuzzlement, from puzzles solved in a twinkling of an eye to some that will knit your brow for hours. From how to cheat in a coin toss to why it is that some parts of a high speed train travelling at 125mph are ac...