GRE数学辅导：最新gre猴哥数学难题解析(二)

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　　下面为大家总结了最新的gre猴哥数学难题。有很多gre考生对gre数学考试十分苦恼，其实最有效的方法就是多练习，把数学基础知识记牢，这样才能在考试中对答如流。而gre数学考试中也会出现一些难题，想拿高分也十分不容易。
# M" I/ ?3 Y# z7 l' ^+ Q　　11. In the equation above, k, r, s, t, and v represent positive numbers. Multiplying which one of these numbers by 2 will reduce the value of n to 1/2 of its present value?
D. t    E. v</p>　　12. A certain money market account that had a balance of $48,000 during all of last month earned $360 in interest for the month. At what simple annual interest rate did the account earn interest last month?
　　A. 7%    B.7.5%    C.8%    D.8.5%    E.9%
/ P: @  n: [/ H9 o9 f2 ]$ R　　13. Column A: The two-digit integer that equals twice the sum of its digits
- [! t+ c8 u" _. J+ a' u7 H# S7 \　　      Column B: 16
　　14. A car travels at an average speed of 80 kilometers per hour during a 6 - hour trip and averages 75 kilometers per hour for the first 4 hours of the trip. Which of the following distance-versus-time graphs is consistent with this information?
D. 60-year-old females</p>　　E. 80-year-old females
& k5 Q" |( j! v　　18. Approximately how many more 10-year-old children were there in 1980 than in 1986?
# J; ]$ [* R( e　　A. 100,000       B.200,000       C.300,000       D. 400,000       E.1,000,000
; x! q- ?) |, Q: @. a　　19. The population of females was greater in 1980 than in 1986 for approximately what percent of the ages from 0 to 100 years?
1 `: o2 t( o: `  k$ y  s　　A. 15%     B.25%     C.55%     D.75%     E.85%
　　20. In 1980 the ratio of the number of males to the number of females was greatest for which of the following ages?
0 l- \: n0 b* V; T: e! X　　A. 10     B. 30     C.50     D.70     E.90
　　最新的gre猴哥数学难题中有很多gre数学考试中常见的难题，而且难题涉及的范围也比较广泛，考生在复习时一定要多注意日常的练习和积累。