Texas, 2/24 mission accomplished

主题: Texas, 2/24 mission accomplished

Math:

DS: m and n are both integers, if m*n is even number?

a. m is even.

b. n is even,

Answer: c (My answer was d. I was so stupid! After I clicked confirm button, no time to rewind. All right, my bad )

Which of the follow equation has exact one point (x,y) at which both x and y are integers.

a. x = 2y

b. y = 3x + 2

c. y = 1/2x +12

d. y = square root of 3 * x

Answer: D

Person A can finish a job in 6 hours, B can finish the same job in 4 hours. (there is another figure I guess you won’t need it)if they do the job together, what percent of job is finished by A?

Answer: 2/5

There is a 10 people group. Choose 6 people in the group to attend a meeting or choose 5 people in the group to attend the meeting. What is the ratio of the ways of choosing 6 people to choosing 5 people?

answer: 5:6

DS: The price of housing increased x percent from 1975 to 1980 and y percent from 1980 to 1985. If a house costs $70,000 in 1975, what is the price of this house in 1985?

a: x + y = 12

b: (1 + x/100)(1 + y/100) = 6

My answer: b

x >< 0, y = x/|x|,

i: x > 0, y = 1

ii: x < 0, y = -1

iii: ?

my answer: i and ii are correct

Pain a white circle which inscribes in a blue square, which portion of the total is the blue part?

(4 - pie) /4

r=0.3423, s=(square0.3423), t =1/(square root of 0.3423), what are the decreasing order of these numbers.

S<r<t

Reading:

wage efficient method vs week efficient method.

American companies used wage efficient method to improve their productivity. That means they pay more wages to workers and owners get payback. There are some benefits about this method: moral, incent workers.(Which of the following is the benefit brought by this method except: workers corporate with other easily?)

week efficient method derivates from wage efficient method but it has some other advantages such as more flexible work hours.

two research studies on chimpanzee behaviors

the first study was done by a group but did not distinguish what kind of behavior is frequent and what kind is not.

the second study was launched by two other researchers. They made a "list"(watch out: what is the exact meaning about this word? line 37) which comes with 67 kinds of different behaviors. They list these behaviors classified by whether they are frequency ones or just one time behavior. At the end of the article, the author mentioned that the researchers didn’t put in their research the behavior that just happens in some special environments. He gave a example that the chimpanzees living by the sea have a special behavior getting some marine algae.


Voting right of American women

Before 1970’s in America, the election was depended on finance background of the candidate and support from some organizations.

There are some unnamed “rules”(what are the “rules”?: agreed by the politicians and some people who can effect the voting) which hurdle women’ election. There is a survey shows that the things were changed from early 70’s to late 70’s(there is a question about the changing). The winning rate of election was not discrepant bwt men and women anymore. That shows women right improved.

For some reason, although the winning rate is not different, just the number of woman candidates is few. we should encourage and help more women get involved in election.

My ass is still hurting. 4 hours test is so long for me now. Well, I am not that young anymore. I promise I won’t take it again even if I don’t think I did very good job. But my roommates did think I did. Few years ago, when I was taking GRE, I didn’t feel that exhausted.



I took 4 kaplans: 550, 550, 570, 590. See, how bad I was. But I