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发表于2024-11-28
Mathemagic pdf epub mobi txt 电子书 下载 2024
More than 60 new puzzles and stunts based on the properties of numbers. Easy techniques for multiplying large numbers mentally, identifying unknown numbers, determining the date of any day in any year, such entertainments as The Lost Digit, and Psychic Bridge. Over 30 pages of magic squares, triangles, cubes, more. 76 illustrations.
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Mathemagic pdf epub mobi txt 电子书 下载 2024