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新GRE數(shù)學(xué)易錯題總結(jié)
第一題
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
三條任意直線，L1和L2的交點的個數(shù)與L2和L3的交點的個數(shù)沒關(guān)。
第二題
The number of 1/4-inch lengths in 1 a 4-inch length
是問4英尺中有多少個1/4英尺，應(yīng)該是16個，所以是A
第三題
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
邊長為1的立方體里最多能放下幾個邊長為1/2的立方體，是8個.
第四題
Cube C has volume 8 cubic centimeters.The area of one of the faces of cube C 3 square centimeters
立方體體積是8，那一個面的面積是4.
第五題
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
第六題
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
應(yīng)該是-11
第七題
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
新定義的運算a·b=a(a+b), 那a·(a·b)=a·(aa+ab)=a(a+aa+ab)=aa+aaa+aab
第八題
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. 1 B.2 C. 3 D. 4 E. 5
答案是D，題目我都看不懂，是啥意思呢?
這是說秘書打六封信，沒一封信要1頁或者兩頁。如果秘書總共打了10頁，那么有多少封信是兩頁?
解答：設(shè)有x封，則2x+(6-x)=10,解得x=4.
第九題
how many of the five numbers above are each equal to the product of an integer and an odd integer that GREater than 1?
這五個數(shù)是：2 6 8 14 16
A.none B.one C.two D.there E.four
題目意思是這5個數(shù)哪些可以是2個>1的數(shù)的積,一個是奇數(shù)，一個是整數(shù)，只有6和14的因數(shù)中有奇數(shù)，所以C。
第十題
這句話大家看該怎樣列式子呢?這是一道圖表題.
what was the approximate percent increase in personal income from 1965 to 1970?
是這樣(1970-1965)/1965還是(1970-1965)/1970這樣?
是這樣1970-1965)/1965的.