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89.30 A short note on the divisibility of numbers consisting of repeated digits | The Mathematical Gazette | Cambridge Core
![Elementary Number Theory (Third Edition) by David M. Burton, an Advanced Mathematics Textbook published by WCB, Hobbies & Toys, Books & Magazines, Assessment Books on Carousell Elementary Number Theory (Third Edition) by David M. Burton, an Advanced Mathematics Textbook published by WCB, Hobbies & Toys, Books & Magazines, Assessment Books on Carousell](https://media.karousell.com/media/photos/products/2018/05/27/elementary_number_theory_third_edition_by_david_m_burton_an_advanced_mathematics_textbook_published__1527409234_34efb31d.jpg)
Elementary Number Theory (Third Edition) by David M. Burton, an Advanced Mathematics Textbook published by WCB, Hobbies & Toys, Books & Magazines, Assessment Books on Carousell
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