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|Amazon UK||today||38.39||$21.97||You save $16.42|
Over 500 new maths, logic and word brain teasers.
Nathan Haselbauer used to work on Wall Street, but he found the work intellectually stultifying. He transformed his hobby, the New York High IQ Society, established as a younger, more 'rock 'n' roll' alternative to Mensa, into the International High IQ Society. Today, the society has more than 7,000 paid up members and more than 350,000 unique visitors every month.