求教GWD_Math.10_Q21

paradoxise · 发表于 2011-5-29 17:23:40

求哪位大虾帮忙，下面这道题我为啥想不通例？Q21:
At a garage sale, all of the prices of theitems sold were different. If the priceof a radio sold at the garage sale was both the 15th highest price and the 20thlowest price among the prices of the items sold, how many items were sold atthe garage sale?
A. 33
B. 34
C. 35
D. 36
E. 37

flywer · 发表于 2011-5-29 17:31:30

请问这题选什么呀

paradoxise · 发表于 2011-5-29 17:44:53

答案是B

shevit · 发表于 2011-5-29 19:59:43

想不通的话，楼主一个一个数吧

jennycucumber · 发表于 2011-5-29 20:02:36

正着数排15前面有14个，反着数排20后面有19个，加上自己所以34个

flywer · 发表于 2011-5-30 17:31:44

嗯~ls解释的很清楚啦

求教GWD_Math.10_Q21

所属分类: GMAT考试

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