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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。 81. Both soup S soup T contain polyunsaturated fat, and each contains more saturated fat than polyunsaturated fat. Soup T contains 2 more grams of saturated fat and 2 more grams of polyunsaturated fat per serving than soup S. Column A: The ratio of the amount of saturated fat to the amount of polyunsaturated fat in soup S. Column B: The ratio of the amount of saturated fat to the amount of polyunsaturated fat in soup T. 82. According to the weather forecast above, approximately how many hours of sunshine are expected on November 24? A.21/4 B.27/4 C.15/2 D.33/4 E.39/4 83. If N/2 and M/5 are both integers, which of the following expressions must also be an integer? A. /7 B./7 C./2 D. /10 E. /10 84. If the total value of sales of long-playing albums in 1985 was $1280 million, then the average selling price of a long-playing album that year was closest to____ A. $6.00 B.$6.50 C.$7.00 D.$7.50 E.$8.00 85. 86. From 1990 to 2000, the projected gain in the number of people in the United States labor force is approximately what percent of the projected gain for Asia? | 
