GMAT数学实用答题技巧总结
<p> 第一、挨个试答案，最笨的办法有时候是最快的方法。这种题适用的范围不是很广泛，但是准确率高，只要某个答案符合就肯定可以成立。有时候特别是选项里面有<span word="I">I</span> <span word="only">only</span>, <span word="II">II</span> <span word="III">III</span> <span word="only">only</span>之类的题可能效果不错。因为顺着解有时候容易丢解，就算真正算出来了也最好哪个都试试防止不全面。反正一共就3个。</p><p> 例如：</p><p> 150, 200, 250, <span word="n">n</span></p><p> <span word="Which">Which</span> <span word="of">of</span> <span word="the">the</span> <span word="following">following</span> <span word="could">could</span> <span word="be">be</span> <span word="the">the</span> <span word="median">median</span> <span word="of">of</span> <span word="the">the</span> 4 <span word="integers">integers</span> <span word="listed">listed</span> <span word="above">above</span>?</p><p> 175</p><p> 215</p><p> 235</p><p> <span word="A">A</span>. <span word="I">I</span> <span word="only">only</span></p><p> <span word="B">B</span>. <span word="II">II</span> <span word="only">only</span></p><p> <span word="C">C</span>. <span word="I">I</span> <span word="and">and</span> <span word="II">II</span> <span word="only">only</span></p><p> <span word="D">D</span>. <span word="II">II</span> <span word="and">and</span> <span word="III">III</span> <span word="only">only</span></p><p> <span word="E">E</span>. <span word="I">I</span>, <span word="II">II</span>, <span word="and">and</span> <span word="III">III</span></p><p> <span word="GMAT">GMAT</span>入门的考生像这道题用这个方法非常简单</p><p> 第二、特殊值法。我个人比较喜欢用。这种方法用好了就出奇制胜一击必杀。但用不好就很容易出错。用的时候注意几个问题。</p><p> 1. 一定要保证你所适用的特殊值是否符合题目中所规定的范围内。比方说，正负数，是否整数，可否为0，<span word="n">n</span>个数能否相等之类的等等。还有些隐含的条件一定要注意。比方说8月<span word="JJ">JJ</span>里面一个题：</p><p> 21个数，第1个是后面20个平均数的4倍，问第1个数占21个数总和的几分之几。</p>
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