8.17换题后JJ分类汇总（有补充整理）

Fisherman

无收录：DS:问中位数是多少
            

1、有1/2的数小于等于18500
            

2、有1/2的数大于等于18500

应该是D吧？
            

我觉得这道题应该是E

举个反例：

有两组数据：

（1）1，2，3，18501，18502，18503
（2）2，3，4，18502，18503，18504

这两组数据都符合（1）和（2）的条件，但它们却有不同的中位数。

我觉得这道题应该是E

举个反例：

有两组数据：

（1）1，2，3，18501，18502，18503
（2）2，3，4，18502，18503，18504

这两组数据都符合（1）和（2）的条件，但它们却有不同的中位数。

annika_shao

先谢谢楼主，JJ整理的太好了

math JJ 第4题的变体: 4个小正方体组成一个大立方体，每个小正方体都有一个面涂成蓝色，

                              问大方块表面最多有多大比例是蓝色的？

楼主给的答案是56/64=7/8 我有不同意见。

我的算法是：56/96=7/12, 因为是算面积比例，分母应该是大正方体的表面积16×6=96。

大家来看看吧。

runpiggie

 

up! up!

追梦人75

同意楼上的做法

duckzxcv

以下是引用Fisherman在2007-8-23 10:29:00的发言：

GWD-29-Q17
The total market value of real estate in Altonville has steadily declined over the past four years.  This decline has meant that the overall figure on which the city’s property tax is based—the assessed value of that real estate—has also declined.  The percentage of assessed value that was paid as property taxes to the city, however, did not change from year to year during this period.

The information above most strongly supports which of the following?

A. The percentage of Altonville’s yearly revenue that comes from money collected in property taxes did not change over the past four years.
B. The percentage of Altonville’s yearly revenue that comes from money collected in property taxes has declined steadily over the past four years.
C. The amount of revenue that Altonville collected from property taxes was lower last year than it was four years ago.
D. During the past four years, Altonville officials increased tax rates on other sources of revenue such as retail sales and business profits.
E. Altonville will soon require property owners to pay a higher percentage of the assessed value of their property as property tax.
   Answer:

大家都帮助xiximm把这个好帖完善下去吧~！！

这道题是不是选C啊，唉，逻辑越来越没根了

i prefer B

[此贴子已经被作者于2007-8-23 11:21:13编辑过]

Fisherman

题目不是说Percentage在过去四年没有变么？那B好像就不对了。

waninayang

支持LS两位的答案~E和7/12~

GWD这题答案给的是C

lxx119

这题我也选B

market value of real estate in Altonville has steadily declined in four years * same percentage of tax rate= revenue that comes from money collected in property taxes has declined steadily over the past four years.

lxx119

哦，不好意思。。。应该是C. 没看见前面的B. The percentage和C. The amount of revenue

waninayang

1.        问30是不是N 的factor (1) 30是N^2的factor  (2) 30 是2N 的 factor   

A

觉得应该是E

假设N^2为90，30是N^2的factor  ，但是n为3*根号10，没有30这个factor啊