Ball of confusion : puzzles, problems and perplexing posers

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 actually going backwards, Ball of Confusion will bend your mind in places it's never been bent before. 'This is a lovely compilation of puzzles including many classics, and Johnny Ball's legendary enthusiasm and humour jump out of every page.' Rob Eastaway, co-author Maths for Mums & Dads.