必威体育精装版gre猴哥数学难题解析(二).pdf

智 课 网 G R E 备 考 资 料 必威体育精装版gre猴哥数学难题解析(二) 下面为大家总结了必威体育精装版的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。 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? A. k B. r C.s D. t E. v 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% 13. Column A: The two-digit integer that equals twice the sum of its digits 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? 15. The number of households receiving monthly benefits in 1960 was approximately what fraction of the number receiving monthly benefits in 1975? A. 9/10 B.5/6 C.16/27 D.11/32 E.8/35 16. When the even integer n is divided by 7, the remainder is 3. Column A: The remainder when n is divided by 14 Column B : 10 answer: C 17. The “combined age” of a group of people is the sum of the ages of all the people in the group. Which of the following groups had the greatest combined age in 1986? A. 20-year-old males B. 20-year-old females C. 60- year-old males D. 60-year-old females E. 80-year-old females 18. Approximately how many more 10-year-old children were there in 1980 than in 1986? A. 100,000 B.200,000 C.300,000 D. 400,000 E.1,000,000 19. The population of females was greater in 1980 than in 1986 for approximately what percent of the ages from 0 to 100 years? A. 15% B.25% C.55% D.75% E.85% 20. I