{"product_id":"9781494349691","title":"5000 Difficult Numbrex Puzzles to Improve Your IQ","description":"Solving NUMBREX puzzles guarantees to put your brain in top operating condition. NUMBREX puzzles challenge your mind two ways. First translate the result of an addition, subtraction, multiplication or division to decimal from binary, hexadecimal or roman numeral number formats. Second calculate the missing second operand in the arithmetic operation. \u003cp\u003eNUMBREX \u0026amp; SOLUTION \u003c\/p\u003e\u003cp\u003e2952. 53 - ____ = 10000\u003cbr\u003e2953. 7 \u003cbr\u003e• ____ = LXXXIV\u003cbr\u003e2954. 12\u003c\/p\u003e","brand":"CreateSpace Publishing","offers":[{"title":"Default Title","offer_id":47033091883248,"sku":"9781494349691","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781494349691_p0.jpg?v=1763701919","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781494349691","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}