1月19号

1月19号，精准回忆考题！（原题复述）
onion 2004-01-29 19:12:32
我考的数学有一月份机经的32题、62题，63题、76题、95题、127题、136题、167题、168题、173题、175题(183题)、188题、193题。

62题：what is the sum of a certain pair if consecutive odd integers?
(1) at least one of the integers is negative
(2) at least one of the integers is positive
ans: c

173题: if y is the smallest positive integer such that 3150 multiplied by y is the square of an integer, then y must be:
a.2 b. 3 c.7 d. 4 e. 14
ans: e.14

另外机经外的题目有：(百分百原题复述！)
1． the surface of a certain planet reflects 80 percent of the light that strike it. the clouds around the planet then absorb 40 percent of the reflected light. what percent of the light that strikes the planet is reflected from the surface and passes trough the clouds without being absorbed?
ans: 40%

2． if x>1 and y>1, is x (1) x^2/(xy+x)<1
(2) xy/(y^2-y)<1
ans: e

3. in a meeting of 3 representatives from each of 6 different companies, each person shook hands with every person not from his or her own company . if the representatives did not shake hands with people from their own company, how many handshakes take place?
ans:135

4.from a group of 3 boys and 3 girls, 4 children are to be randomly selected. what is the probability that equal numbers of boys and girls will be selected?
ans: 3/5

5.the first roll of a cinema has 16 seats, the roll immediately after the first roll has 2 more seats than the first roll. every roll has two more seats than the roll immediately in front of it. the last roll of has 64 seats. how many seats does this cinema have?
ans: 1000

6. in the parallelogram shown, pq=4, qr=6,angleqps is 30 degree, what is the area of pqrs?

q ______________r
/l /
/ l /
p /__l____________/s

（图形可能会变形，那三个1是我想画的平行四边行的高，请大家将就一下吧）

7. a scientist recorded the number of eggs in each of the 10 birds' nests, what was the standard devition of the numbers of eggs in the 10 nests?
(1) the averge (arithmetic mean) number of eggs for the 10 nests was 4
(2) each of the 10 nests contained the same number
ans: b

8. the base of a retangular solid tank is a square, the length of each side of the square is 4 meters, the altitude of the tank is 6, if there is 16 cube meters water in the tank, what is the rate of the volume of water in the tank to the volume of the retangular solid tank?
ans: 1/6

目前就只记得这么多，其他的等我想起来再说吧，有好几题都是呼之欲出，可是现在体力透支，没办法，静待我的佳音吧。很快我就会有新的回忆啦！！！！

　

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