{ "item_title" : "The Mass Points Method", "item_author" : [" Yongcheng Chen "], "item_description" : "This is the first book of Math Contest Books Series. The book introduces a powerful problem solving technique - the mass points method. The book can be used by students preparing for math competitions such as Mathcounts, AMC 10/12/AIME.Second book of Math Contest Books Series: https: //www.amazon.com/Balls-Boxes-Yongcheng-Chen/dp/1540390578Third book of Math Contest Books Series: The Area Method https: //www.amazon.com/dp/1540856410 Fourth book of Math Contest Books Series: Problem Solving Using Cauchy's Inequality https: //www.amazon.com/dp/1541000285 Fifth book: the Completing Square Method: https: //www.amazon.com/dp/1542426626 9th book: Problem Solving Using Auxiliary Lineshttps: //www.amazon.com/dp/1975681754 10th book: https: //www.amazon.com/Problem-Solving-Using-Vietas-Theorem/dp/1542800056", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/54/245/870/1542458706_b.jpg", "price_data" : { "retail_price" : "19.99", "online_price" : "19.99", "our_price" : "19.99", "club_price" : "19.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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