GRE数学之代数重点考题

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编辑点评: 今天小编为大家整理了一些GRE代数方面的重点考题,大家不妨从这些题目入手来复习。

今天小编为大家整理了一些GRE代数方面的重点考题,大家不妨从这些题目入手来复习。

1.On a certain number line, if-7 is a distance 4 from n and 7 is a distance of 18 from n then n=

A.25

B.11

C.3

D.-3

E.-11

答案:E

2. Which of the following equations can be used to find the value of x if 7 less than 5x is 5 more the product of 3 and x?

A.5x-7=5+3x

B.5x-7=5+(3+x)

C.7-5x=5+3x

D.7-5x=(5+3)x

E.7-5x+5=3x

答案:A

3.On a number line, the distance between the two points with coordinates -5 and 1 is how much less than the distance between the two points with coordinates 2 and 14?

A.6

B.8

C.10

D.12

E.16

答案:A

4.The expression (4+x)(2x-3) is equivalent to which of the following?

(1)2x(x+4)-3(x+4)

(2)(x-4)(2x+3)

(3)2x2-12

A.(1) only

B. (2) only

C. (3) only

D. (2) and (3)only

E. (1),(2) and (3)

答案;A

5.On the number line, 1.4 is halfway between which of the following pairs of numbers?

A.-1.4 and 2.4

B.-1 and 2

C.-0.3 and 3.1

D.0.15 and 1.55

E.0.4 and 1

答案:C

6.If the sum r+s is 2 less than the difference r-s, then s=

A.-2

B.-1

C.0

D.1

E.2

答案:B

7.The value of y will decrease as the value of x increases in which of the following equations?

A.y=x

B.y=x-2

C.2-y=3-x

D.2x-y=4

E.x+2y=1

答案:E

8.What is the cost, in cents, of using a certain fax machine to send n pages of a report if the total cost for sending the first k pages is r cents and the cost for sending each additional page is s cents?(assume that n>k)

A.r+s(n-k)

B.r+s(n+k)

C.rs(n+k)

D.kr+s(nk)

E.kr+ns

答案:A

上面每一题都是GRE数学代数方面的重点考题。大家可以以此入手,好好复习!

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