A telephone company has no.'s between 3000-3799.A Company ca

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A telephone company has no.'s between 3000-3799.A Company called X uses the numbers from 3300-3499.Out of these managers of Division1 level use numbers ending with 0 or 1.What percent of the telephone company numbers are used by
Managers of Division1 level of Comany

3300~3499尾数为0或者1的一共有2x20=40个,所以比例是40/800=5%
再问：为什么不是40/200,题中已经说了是在3300-3499中取数啊。
再答：题目是这样问的What percent of the telephone company numbers are used by Managers of Division1 level of Comany X? 因此Managers of Division1 level of Comany X使用的号码数量是分子，也就是40. 而telephone company numbers是分母，即800，所以是40/800 如果问题换成这样What percent of the telephone company numbers are used by Comany X? 那么应该按照你说的算，因此这里的3300-3499是为了计算40用，同时也是为了模糊考生，做GRE数学细心审题就没有问题了，这道题确实有一定难度，希望能帮到你，加油吧！
再问：应该是What percent of Company x numbers are used by Managers of Division1?吧
再答：嗯嗯，对的，我也粗心了呵呵

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