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考生如果觉得复习gre数学考试比较难不妨从这些题目练习开始，每篇都是按照分类给大家列举了一些典型题目，本篇主要是针对gre数学考试算术方面的典型题目及答案。下面是21-30题。 21. The sum of n different positive integers is less than 100. What is the greatest possible value of n? A.10 B.11 C.12 D.13 E.14 答案：D 22.If p is a prime number greater than 11, and p is the sum of the two prime numbers x and y, then x could be which of the following? A.2 B.5 C.7 D.9 E.13 答案:A 23.Of the positive integers that are multiples of 30 and are less than or equal to 360, what fraction are multiples of 12? A.1/6 B.1/5 C.1/3 D.2/5 E.1/2 答案:E 24.If x, y and z are consecutive integers and x . xyz is even. . x+y+z is even. . is odd. A. None B. only C. only D.andonly E. ,and 答案：D | 
