tailieunhanh - Master the Gre 2010 - Part 11

Peterson's Master the Gre 2010 - Part book includes 9 full-length practice tests , thorough reviews of every section on the exam, and expert tips and strategies from a test prep pro. GRE (Graduage Record Examination General Test) is a commercially-run standardized test and an admission requirement for many graduate schools in USA and other English-speaking countries. GRE can earn you between 200-800 points. | Chapter 3 Practice Test 1 Diagnostic 83 40. Since x 40 and y z 140 y z x and Quantity B is greater than Quantity A. 11. The correct answer is A . 1 centimeter 9 kilometers so the number of kilometers is 9 times greater than the number of centimeters. Conversely the number of centimeters is or approximately 11 of the number of kilometers. 12. The correct answer is D . The drawer must include at least 20 pairs of striped socks. That leaves a total of 20 pairs of solid socks. If the drawer contains exactly 20 solid white pairs then w 20 the drawer contains no solid gray pairs g 0 and w g 20. Accordingly Quantity A equals Quantity B in this case. However if the drawer contains fewer than 20 solid white pairs then w 20 and w g 20 and Quantity A is less than Quantity B. 13. The correct answer is B . You don t need to perform precise calculations to make the comparison. First consider Quantity A. 333 and 3 10. Now consider Quantity B. Since 10 which we know exceeds Quantity A is less than 33 of 33 Quantity B must be greater than Quantity A. Quantity B is a fraction just under 11 but clearly greater than 10. 14. The correct answer is D . Which quantity is greater depends on whether a b and c are positive or negative. If you re the least bit unsure about this it s a good idea to plug in a few simple numbers. For example let a 2 and b 1. If c c c 1 a positive value then ab l- -D. But if c 2 V c c number then a b 1 a negative 1 0 I - - I 2 1J 15. The correct answer is B . For equation B to hold true y must equal z which is impossible given that y U U z . Equation A could hold true for example if x 2 y 1 and z -. Equation C could hold true because it is possible that any one of the three variables could equal 0 zero . Equation D could hold true for example if x 3 y 2 and z 1. Equation E could hold true for example if x 2 y 1 and 1 z . 2 16. The correct answer is . Calculate the discount rate using the original price 13- or rounding to the nearest tenth of a .