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[GRE数学] 新GRE数学考试算术题精选例子(7)

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发表于 2012-8-15 12:55:17 | 显示全部楼层 |阅读模式
新GRE考试的改革,让许多考生们都感觉头疼,但是复习起来如果觉得难的话,不妨练习一下这些经典例题,一定会有所帮助的哦!  
7 w/ D, S; q" l* J% t1.At College C there are from 2 to 4 introductory philosophy classes each semester, and each of these classes has from 20 to 30 students enrolled. If one semester 10 percent of the students enrolled in introductory philosophy failed, what is the greatest possible number who failed?
: Q) `( L( C4 p7 O% h( P  A.12
, S+ m3 d6 P# L9 b  B.10 $ [! u' m5 c5 U6 R. N1 O
  C.8 www.examw.com
# g7 m, N6 h; K/ E' ~# k  D.6
0 f9 J% e6 W7 O) e& B  E.3 " F( G  j1 c, }( y# @, R) r4 ]
  答案:A
0 E8 r' K' e- N) J0 Z2.In each of the years 1983 and 1984, the total number of automobiles sold in the United States was 1.2 million more than in the previous year.
" i0 D2 |# C  H3 y" i5 ^: R/ v: z  Percent increase in the number of automobiles sold in 1983 over 1982 ; M8 w3 t6 \) H0 t
  Percent increase in the number of automobiles sold in 1984 over 1983
9 T2 K; n# m# l* ?% h, r1 |  答案:A
0 b8 q, d7 F+ U0 E9 n: s3.A school district has 1989 computers, which is approximately one computer for every 68.6 students. Of the following, which is the closest approximation, in thousands, of the number of students in the school district?
; s6 b+ s# o, j% u& X5 j# Q' s  A.30
' L/ e0 S3 w/ F- i  B.120 , w) t0 i) S/ |, x7 y' J
  C.140   _5 S7 @9 k8 [% ~
  D.160
" D# j$ e; [7 E4 k" b' P5 q/ E  E.200 ! s; C( A  O2 `  i
  答案:C
. d0 v2 _" s) c4.If the sum of five consecutive even integers is 70, what is the value of the greatest of the five integers.
# e9 u0 X( G2 z. v4 H  A.12 ; Z4 N6 |6 ?$ Y( h1 s6 N, M" W
  B.14 . L3 J* w7 X; i" P  j# ~: D, H
  C.18
1 M* `, n2 q# R" C" o* R% C! x  D.20
5 U4 ]1 L. H, K  E.22 www.examw.com8 b# `5 \# Y/ ]* l. ^7 y
  答案:C
4 `' Y  m' M) J; R0 V1 k5.The sum of the first 50 positive integers is 1275. What is the sum of the integers from 51 to 100, inclusive?
) O) ]4 D0 o0 {% W# j  A.2525 6 Y2 B& e: b( E2 f
  B.2550 7 s- b' f9 }. H7 m
  C.325
( E( V7 n* I' C" Q$ j* ^) Y: |  D.3775 1 l  A0 P" _9 i  C# A# Z9 W
  E.5050 ; d' o0 t1 |& ^0 F6 K; h' P  j
  答案:D
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