gre数学基本概念及实例解析(1)
<p> <span word="gre">gre</span>数学考试在新<span word="gre">gre</span>考试当中增加了一些难度，但是<span word="gre">gre</span>考生也不要太紧张，只要把一些<span word="gre">gre</span>数学基本概念掌握好，解题时就一定能轻松应对。</p><p> 数基本概念</p><p> 整数 <span word="integers">integers</span>, <span word="whole">whole</span> <span word="numbers">numbers</span></p><p> 正数 <span word="positive">positive</span> <span word="numbers">numbers</span></p><p> 负数 <span word="negative">negative</span> <span word="numbers">numbers</span></p><p> 奇数 <span word="odd">odd</span> <span word="numbers">numbers</span></p><p> 偶数 <span word="even">even</span> <span word="numbers">numbers</span></p><p> 质数 <span word="prime">prime</span> <span word="numbers">numbers</span></p><p> 合数 <span word="composite">composite</span> <span word="numbers">numbers</span></p><p> 知识点：</p><p> 2是最小的质数，也是唯一的偶质数</p><p> 0,1非质非合</p><p> 质数没有负数</p><p> 例题：</p><p> 1.如果<span word="Q">Q</span>是一个大于11的质数，并且<span word="Q">Q</span>是两个质数<span word="A">A</span>和<span word="B">B</span>之和，<span word="A">A</span>可以是下列哪一个?</p><p> <span word="A">A</span>.2</p><p> <span word="B">B</span>.5</p><p> <span word="C">C</span>.7</p><p> <span word="D">D</span>.9</p><p> <span word="E">E</span>.13</p><p> 2.一个正好有两个大于1的不同因数的正整数必然是：</p><p> <span word="A">A</span>.一个质数</p><p> <span word="B">B</span>.一个偶数</p><p> <span word="C">C</span>.3的倍数</p><p> <span word="D">D</span>.质数的平方</p><p> <span word="E">E</span>.奇数的平方</p><p> 平时，<span word="gre">gre</span>考生一定要注意<span word="gre">gre</span>数学基本概念的加强理解，因为无论<span word="gre">gre</span>数学考试怎样的题目都是从最基本的概念中演变而来的。</p>
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