2015年新GRE数学真题之105道易错题
<p>考试吧整理“2015年新<span word="GRE">GRE</span>数学图表题目取得高分方法”更多<span word="GRE">GRE</span>数学模拟试题、<span word="GRE">GRE</span>数学真题等，请访问考试吧<span word="GRE">GRE</span>考试网！ </p><p> 很多新<span word="gre">gre</span>数学复习考点都是高中时候学到的知识点，考生不要过于紧张，把基本概念弄明白，再记住一些新<span word="gre">gre</span>数学必备的词汇，再加上多做题多练习，那么相信拿到新<span word="gre">gre</span>数学高分应该没有问题。以下是新<span word="GRE">GRE</span>数学105道题，各位考生可以进行练习。</p><p> 1. <span word="n">n</span>个数从小到大排列，求(<span word="n">n</span>-1)/4，设商为<span word="i">i</span>，余数为<span word="j">j</span> ,则可求得1<span word="st">st</span> <span word="Quartile">Quartile</span>为：(第<span word="i">i</span>+1个数)*(4-<span word="j">j</span>)/4+(第<span word="i">i</span>+2个数)*<span word="j">j</span>/4</p><p> 2. 4个*，2个·的排列方式 15(=)</p><p> 3 .5双袜子，同时去2只，刚好配对的概率。1/9</p><p> 4. 40人说<span word="French">French</span>,60人说<span word="Russian">Russian</span>,80人说<span word="Italy">Italy</span>,说两种语言的有50人,说三种语言的有 10人. 共有125人,问不说这些语言的有几人. <span word="Key">Key</span>:125-(40+60+80-50-10*2)=15</p><p> 5 .等腰直角三角形边长2加2倍根号2，求面积。</p><p> 6. 某种溶液浓度为125<span word="gram">gram</span> <span word="per">per</span> <span word="liter">liter</span>, 转换成 <span word="ounce">ounce</span> <span word="per">per</span> <span word="gallon">gallon</span>,求表达式.已知 1 <span word="ounce">ounce</span>=28.<span word="xxx">xxx</span> <span word="gram">gram</span> <span word="and">and</span> 1 <span word="gallon">gallon</span>=3.875 <span word="liter">liter</span></p><p> 7. <span word="x">x</span>,<span word="y">y</span>,<span word="z">z</span> 均方差为<span word="d">d</span>, 求<span word="x">x</span>+10,<span word="y">y</span>+10,<span word="z">z</span>+10的均方差 (<span word="d">d</span>)</p><p> 8. 1的概率是0.8,2的概率是0,6,问是1或是2或是<span word="both">both</span>的概率,1-0.6*0.8(数字瞎编)=0.92.</p><p> 9. 还有一组测量数据中,12.1比<span word="mean">mean</span>低1.5个标准差,17.5比<span word="mean">mean</span>高3.0个标准方差.问<span word="mean">mean</span>是多少.13.9(设标准差为<span word="X">X</span> 12.1+1.5<span word="X">X</span>=<span word="M">M</span>，17.5-3<span word="X">X</span>=<span word="M">M</span>)</p>
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