184. X,Y两忙挣钱,问 In June,the rate X 挣的钱 to Y挣的钱?
A) X In June挣的钱比Y In May挣的钱多50%
B) Y In June挣的钱比In May挣的钱增长了25%
185. a square 面积为16,T为square 内一点,与底边形成三角形,TA 为高,A 为底边上一点,问TA长?
A) 三角形面积为square 的 1/3
B) 三角形面积与square内剩余面积之比为 1/2
187. x,y,z 为consecutive integers, 且x z,问z^2 - x^2 -y^2 不可能为的值
-12
-6
0
3
4
188. given the formula,ask 從50加到100的和?
189. lottery $16 billion, separate as gifts, government payment, and expense, give the relation of payment and gift the relation of payment and presentation, ask the payment in $ amount
190 . r1, r = 1- whats the value of : r - = 1/r
191. 一个三角形x,y,z,分别为三个外角,确定x的度数?
A. x=y
B. x=z Susans answer is C
192. 99到301间的偶数的和
答案:20200
方法:99到301间的偶数的和=100到300间的偶数的和,等差数列求和=N/2= 101/2=20200
193.DS: 两个数列S,T,S 由偶数组成,T由奇数组成,两个数列个数相同,问S的MEDIAN 和T的算術平均值谁大?
S,T 為連續的数
S的算數平均值大于T的
194.a rectangular has area of 15000 square feet, the length is 50 feets than the width, what is the length? A:150
8.abcdefg seven medicine, how many different discriptions that the doctor can give if any three of them are chosen and a and b cannot be taken at the same time together?
A:30 196. which one has least value:
a: 1/100, b: 0.1/10, c: 1/600, d: 0.01/10 e: ? my key: c
197.1/1000=?
198.k=0.1-0.1^2, x0.05?
a: K0.0009/x
b: k0.009x
199. ask the volume of a cube
a: k, k+2, k-1 is its three side
b: one of its greatest surfcae is 120
200.p,q,r,s依次排开,ps=10,ask qr=?
a:qs=9
b:pr=3
201.求一个表达式。两组数字,a有4,象对应b有4个,其中一个是x,
my choice is x=a^2/1-b, sorry, 记的不清楚, anyway, it is easy.
202.n11的质数,求n=?
A: 2^-n2^-6
B: 4^-n2^-6
204. 一个数,不是prime,那么一定是 ? 选E
a) 一个even prime加一个odd prime
e) multiple of primes
205. 看X报的有60%,看Y报的有75%.问至少有多少人两种报都看? 答案:35%
206. x+y=17,问y
a) y17/2
b) x9.8
207. 一个连续数列,以3开头,问有多少个数?
a) 平均值为6
b) range为7
208. 3 男5女中选3人,问至少有1男的选法。
209. 有11 个人做A, 10 人做B, 14 人做 C, 三个都做的3人, 只做1件事的20人, 问有多少人只做两件事。
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