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[转帖]July 14 JJ 北美 Math/AWA/RC

刚刚从考场出来,还处于兴奋状态中,JJ慢慢来,让我先happy 一下。Verbal 45, Quantitative 51, total
770.
美国。

AWApex Manufacturing bought computer for its manager homes and set up
phone line access to company computer and data files. And its productivity
increased…So other company should adopt the same thing and should expect the
employees to work additional time and increase its profits.

 

AI: Companies should hire based on the
qualifications of resume and education. As personal interviews are subjective…….

 Math:

1. 那道1000个数的average is
5, standard deviation is 1, 4~6 之间的比率是68%, 问小于4的数有多少个。....
最后答案是840


 

2. originally P, first year decreased x
percent, the second year decrease 2x percent based on the end number of the
first year what would be left P(1-0.03^x-0.0002*x^2)


 

3. 一个盒子,inner size是x,y,z, 外面有塑料,厚度是1,what is the volume of the
plastic box。(x+2)(y+2)(z+2)-xyz


 

4. Four distinct integer, mean is 24, median is
17, what is the range?

 

5. 70 feet 长梯子,倾斜60度,梯子sit on the
base with a height of 7,
问最高点是多高。


 

 6. 旧书市场上,打折后paper
back
的书是2 0.25元,hard cover1块钱一本,总共买了8paper back的书, 5hard cover的书。Average retail price of paper back book cost 8 dollars, hard cover
$17.95. The question is that how much is saved compared to the retail price?


 

(I forgot about the numbers in the answer)


  
 

7. An+1=An+3, A100-1 能被3 整除


 

(1)   
A1=1


 

(2)   
A99 不能被3 整除。

 

8. (0.112*0.895*0.221)/(0.234*0.298*0.412)最接近哪个?答案是3


 

9. (2x-4)(x-4)=(x-2)(3x-2)问什么是答案?


 

答案是所有实数。


 

 

10. 抛物线和X轴的交点是-35
  对称轴是一条vertical line, 最高点is (x, 12), 问和y轴的交点是不是大于0

 

11. freshmen, 45% register for German class, of
these, 35% own a computer, how many people own a computer

(1) the one who own a computer and register
for German class is ?


 

(2) the one who donot register for German
class and donot own a computer is 21%

 

12. x1, x2, x3, x4, x5, x6, x7, x8, x9, x10


 

      y1, y2, y3, y4, y5, y6, y7, y8, y9, y10,


 

if yn is xn 除以2的余数。


 

 

(1)  
第一个数列的和是100


 

(2)  
6个数是偶数


 

 

13. 30个数,正数,都不是整数, 和是E. 如果tenth digit是偶数(这样的数有10个),就四舍五入 “up” 为最靠近的integer,如果tenth digit是奇数(这样的数有20个),就四舍五入“down” 为最靠近的integer. 这些整数的和是E, E-S可能是以下的那几个?

 

I: -16


 

II: 6


 

III: 10


 

 

我的选择是I and II.

 

14. 一下哪个能确定X的值


 

(1) x^3=x


 

(2) x^2-2x=-1


 

15. n是不是整数,n^2=a^x*b^y, a,b,x,y都是整数


 

(1)x*y是偶数


 

(2)x+y是偶数


 

16. 工资从8块涨到8.5块,what is the percentage of increase? Ans: 1/16


 

  

阅读:


 

RNA


 

男女的工资差距减小,三个原因

 

南非钻石

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