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Ball of Confusion: Puzzles, Problems and Perplexing Posers
Ball of Confusion Puzzles Problems and Perplexing Posers Author:Johnny Ball From how to cheat in a coin toss to why it is that some parts of a high speed train travelling at 125 mph are actually going backwards, 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.