{"product_id":"9780486252117","title":"Entertaining Mathematical Puzzles by Martin Gardner","description":"Only an elementary knowledge of math is needed to enjoy this entertaining compilation of brain-teasers. It includes a mixture of old and new riddles covering a variety of mathematical topics: money, speed, plane and solid geometry, probability, topology, tricky puzzles and more. Carefully explained solutions follow each problem. 65 black-and-white illustrations.\u003cbr\u003eBinding: Paperback \/ softback","brand":"Gardners","offers":[{"title":"Default Title","offer_id":56289984971125,"sku":"9780486252117","price":8.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/7193\/3106\/files\/9780486252117.jpg?v=1762727284","url":"https:\/\/backstory.london\/products\/9780486252117","provider":"Backstory","version":"1.0","type":"link"}