新GRE數(shù)學解題易犯錯的10個題型

1. 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

1，三條肆意直線，L1和L2的交點的個數(shù)與L2和L3的交點的個數(shù)沒關。

2. The number of 1/4-inch lengths in 1

a 4-inch length

2，是問4英尺中有若干好多個1/4英尺，應該是16個，所以A

3. 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

3邊長為1的立方體里多能放下幾個邊長為1/2的立方體，當然是8個咯

4. Cube C has volume 8 cubic centimeters

The area of one of the faces of cube C 3 square centimeters

4立方體體積是8，那一個面的面積當然是4咯

5. Ms.Smith got an 8 percent cost-of-living raise of $20 per week

Ms.Smith's new weekly salary $260

5 x*0.08=20，那x+20=270>260

6. 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

6應該是-11

7. 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暗示a平方，a3暗示a立方

7新界說的運算a?b=a（a+b）， 那a?（a?b）=a?（aa+ab）=a（a+aa+ab）=aa+aaa+aab

8.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

謎底是D，問題問題我都看不懂，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。如不美觀秘書總共打了10頁，那么有若干好多封信是兩頁？

解答：設有x封，則2x+（6-x）=10,解得x=4.

9 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

我感受這道題除了2不成能，其它四個數(shù)都有可能。可謎底是c,想問巨匠為什么？

問題問題意思是這5個數(shù)哪些可所以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.

10 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仍是（1970-1965）/1970這樣？

是這樣：（1970-1965）/1965

以上即是新gre數(shù)學解題易犯錯的10個題型介紹，希望對考生的新gre數(shù)學考試備考有所幫助。