I am sorry that I could type Chinese in this computer. I just took
GMAT (North America) and cannot wait to give out the fresh chicken to
CDers! So I use my husband's computer in his lab.
T650, M51,
V25(Verbal is always my weakness, sigh...) Although the score is not
good, but it is enough for me. The key to life is content.(just comfort
myself, hehe)
M:
1. My first question: A does a job:
300ton/hour, B: 300ton/hour, C:200/2hours. How many hours will take the
three working simultaneously to move 300ton sth.?
Answer: 3/4
2. 5^x-5^(x-3)=124*5^y, y=?x
Answer: y=x-3
3. s is the sum of five consecutive positive numbers, is s/2-5 greater than s/5-2?
(1)Sorry, I forget
(2)s<40
(2) is sufficient, define the five consecutive positive numbers: x-2 x-1 x x+1 x+2
then s/2-5-(s/5-2)=(3/2)x-3 15(the sum of 12345)<5x<40,thus 3<x<8
so (3/2)x-3>0 s/2-5 is greater than s/5-2
4. an isosceles right triangle, ask 直角边(maybe, I am not sure, I guess so)?
(1) the primeter is x, and x^2-4x-4=0
(2) the hypotenuse is 2
Answer each is sufficient. It is not difficult, but I am not familiar with the words. Maybe what I guess are right.
I met many JJ, but these four are new.
I got up 6:00am, so I am in a headache. If I remind something, I will add them then...
再加几题哈：
5. 一圆内接于正方形，圆面积为x，正方形的周长为x，问x是多少
Answer: 64/pai
6. n有多少个因子？n>30（前面JJ没有提到）
（1）n/5是一个质数
（2）n是两个不同质数的乘积
Answer：D
7. 六月的收入比五月多k，五月的利润是80，000，问六月的利润
（1）六月的成本是五月的成本加k
（2）六月还是五月的收入，一个具体数，记不清了，不充分
Answer：A
8. 1000按r%的年利率存一年，半年计息，收到利息为80.75，问r的范围
Answer：7%-8% 记得有点模糊这题，等待确认
感谢CD的数学JJ，考前第二天我把330道题全做了一遍，考试中为非JJ题节省了不少时间，非常有用。不过语文考得太烂了，没有啥好奉献给大家，等想起再加进来
[此贴子已经被作者于2008-10-28 21:19:21编辑过] | 
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发表于 2008-10-28 03:46:00
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