1. 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%
2. 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
3. x,y,z 为consecutive integers, 且x z,问z^2 - x^2 -y^2 不可能为的值
A.12 B.6 C.3D.4
4. given the formula,ask 從50加到100的和?
5. 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
6 . r1, r = 1- whats the value of : r - = 1/r
7. 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
8. 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
: 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?