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题库 / OG2017Q-PS-74
At a garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?
33
34
35
36
37
题目分析：
收音机的价格是第 15 高，则有 14 个商品的价格比收音机高；是第 20 低，则有 19 个商品的价格比收音机低；14 个比收音机高的商品，收音机，
19 个比收音机低得商品。一供的商品数量就是 14+1+19=34.
综上：答案就是 B.
mark，第15高和第20低是同一个商品，所以是15+20-1
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