Mensa's Most Difficult Number Puzzles: Prove your logical and numerical abilities against 200 fiendish problems

(Paperback)

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Description

Prove your logical and arithmetical prowess by solving the exceptionally tricky problems in Mensa's Most Difficult Number Puzzles.

This full-colour book features a huge variety of numerical conundrums that are certain to test even the most adept of puzzlers. Some puzzles - such as sum skyscraper and calcudoku - will test your mental maths, while others - such as touchy and bridges - will provide a trial for your logical and lateral thinking. Are you up to the fiendish challenge

Author Bio

Dr Gareth Moore is one of the world's leading puzzle-setters, with more than 750,000 book sales to his name. He is the author of more than 75 international brain-training titles including the bestselling puzzle book The Ordnance Survey Puzzle Book, which has sold more than 120,000 copies in the UK. He is also the creator of Brained Up, a cutting-edge brain training site offering scientifically designed daily sessions to help you make the most of your brain.

Mensa is the largest and oldest high IQ society in the world. It is a non-profit organization open to people who score at the 98th percentile or higher on a standardized, supervised IQ or other approved intelligence test.