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1月16日
美国
MATH (50,可信度还是比较高的)
1. which has the mean smaller than median:
a. 2/3 3/4 4/5 5/6 6/7
b.8/7 7/6 6/5 5/4 4/3
c. 8/3 7/3 6/3 5/3 4/3
Answer: Only a
2. is km+p is odd?
条件1 k+p is odd
条件2 m+p is even
Answer: E. both together are not sufficient.
3. SAME as JJ: a parallelogram has a circle, tangent to two sides(which is 58cm) of the parallelogram. how to get the area of the parallelogram?
条件1: know the peremeter of the parallelogram.
条件2: know the circumference of the circle.
Answer: B. 条件2 is sufficient.
4. how many primes between 根号3 and 根号39.
5. Set S contains the multiples of 3 from 1 to 50. Set T contains the multiples of 5 from 1 to 50, inclusively. How many factors in the union of S and T?
Answer: 23 (记得去掉重复数字:15,30,45)
6. 以下哪个选项的第一和第二个数字之间的绝对值变化率大于第二个和第三个数字之间的绝对值变化率:
a. 1 0.5 0.9
b.忘了
c. 0.75 0.5 0.25
7. (x+y)/(x-y) [ (1/x - 1/y) / (1/x + 1/y) ]
Answer: -1
8. which value of n makes ( - 1/5)^ (-n) has the largest number.
a. 3 b.2 c.0 d.-2 e.-3
Answer: B. 2
9. The line l 过原点和(-3, 2)的点 (题目中有图),问与 l 垂直的线的斜率是多少:
Answer: 3/2
10. 2^n * 3^m * 5^w = 360. what is the value of 2^w * 3^n * 5^m :
Answer: 1350
11. 还有一个题是画韦恩图解答的,关于the units who update kitchen 和 update bathroom. 题目很绕,是条件题,不太记得条件说什么了。 我当时选的是E, 觉得两个条件都不可以。感觉条件和题目中给出的东西挺矛盾的。。。
12. 467* 13* 25 =
ASK: add 1 to which digit will increase the least value: (以前JJ出现过这个题目)
Answer: E. 7
13. A square has 2 tangent circles (with a radius R and r), and the two circles also tangent to each other. What is the value of AC (是对角线):
(有给出图,很简单)
Answer: (1+根号2)*(R+r)
14. 一共有46(或者47)pieces的什么东西,然后给出一个4乘以4的格子,每个格子里面有不一样的数字。 问抽出的piece属于某个或者某行,某列的概率。是个概率题目,仔细看清楚题目,不难。 |
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