Well known and much treasured among puzzle aficionados, Professor Hoffmann's 1893 collection of puzzles features both classic and new brainteasers. Including both arithmetic problems and challenges involving words and letters, these pleasantly perplexing highlights from the original edition abound in Victorian charm. Complete solutions for all 158 puzzles.
發表於2024-11-26
Professor Hoffmann's Best Math and Logic Puzzles 2024 pdf epub mobi 電子書 下載
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Professor Hoffmann's Best Math and Logic Puzzles 2024 pdf epub mobi 電子書 下載