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新GRE数学易错题总结
第一题
l1, l2 and l3 are three lines in space.The number of points at The number of points at which lines l1 and l2 intersect which lines l2 and l3 intersect
三条任意直线,L1和L2的交点的个数与L2和L3的交点的个数没关。
第二题
The number of 1/4-inch lengths in 1 a 4-inch length
是问4英尺中有多少个1/4英尺,应该是16个,所以是A
第三题
The maximun number of solid cubes 4 having edges of length 1/2 meter that can be placed inside a cubical box having inside edges of length 1 meter
边长为1的立方体里最多能放下几个边长为1/2的立方体,是8个.
第四题
Cube C has volume 8 cubic centimeters.The area of one of the faces of cube C 3 square centimeters
立方体体积是8,那一个面的面积是4.
第五题
Ms.Smith got an 8 percent cost-of-living raise of $20 per week Ms.Smith's new weekly salary $260
x*0.08=20,那x+20=270>260
第六题
On a certain number live, if -7 is a distance of 4 from n and 7 is a distance of 18 from n then n=
A.25 B.11 C.3 D.-3 E-11
应该是-11
第七题
For all real numbers a and b. if a·b=a(a+b), then a·(a·b)=
A. a2+ab B a2+ab+a C a2+a+b D a3+a2b E a3+a2b+a2
注:a2表示a平方,a3表示a立方
新定义的运算a·b=a(a+b), 那a·(a·b)=a·(aa+ab)=a(a+aa+ab)=aa+aaa+aab
第八题
secretary typed 6 letters,each of which had either 1 or 2 pages.If the secretary typed 10 pages in all, how many of the letters had 2 pages?
A. ...