{"product_id":"mathematical-challenge-book-tony-gardiner-9780521558754","title":"Mathematical Challenge","description":"This book contains almost 600 unusual and challenging multiple-choice problems designed for students aged 11-15. The first part consists of past papers (1988SH93) for the annual UK Schools Mathematical Challenge. The second part contains forty-two short papers of ten questions each in the same style, and are designed to fill a thirty-minute class or homework slot. This collection of unusual, high quality problems will provide an invaluable resource for all mathematics teachers.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49545515663633,"sku":"GOR002115859","price":10.0,"currency_code":"USD","in_stock":false},{"title":"US \/ GOOD \/ SBYB","offer_id":49952189219089,"sku":"CIN0521558751G","price":5.08,"currency_code":"USD","in_stock":false},{"title":"GB \/ GOOD \/ INTERNAL","offer_id":52107916607761,"sku":"GOR002656868","price":16.49,"currency_code":"USD","in_stock":false},{"title":"GB \/ NEW \/ INGRAM","offer_id":52333154009361,"sku":"NLS9780521558754","price":32.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/0521558751.jpg?v=1751261441","url":"https:\/\/www.worldofbooks.com\/products\/mathematical-challenge-book-tony-gardiner-9780521558754","provider":"World of Books ","version":"1.0","type":"link"}