sat数学概率论常用解题技巧
<p> 各位考生一定要注意，对<span word="SAT">SAT</span>数学概率论部分来说，你用的方法越简单，你做对的概率越大，而且还可以在考场上省出很多时间来做更有意义的事情。下面我们就对<span word="SAT">SAT</span>数学概率论部分的常用解题技巧进行总结，以期事半功倍：</p><p> <span word="In">In</span> <span word="the">the</span> <span word="integer">integer</span> 3589 <span word="the">the</span> <span word="digits">digits</span> <span word="are">are</span> <span word="all">all</span> <span word="different">different</span> <span word="and">and</span> <span word="increase">increase</span> <span word="from">from</span> <span word="left">left</span> <span word="to">to</span> <span word="right">right</span>. <span word="How">How</span> <span word="many">many</span> <span word="integers">integers</span> <span word="between">between</span> 4000 <span word="and">and</span> 5000 <span word="have">have</span> <span word="digits">digits</span> <span word="that">that</span> <span word="are">are</span> <span word="all">all</span> <span word="different">different</span> <span word="and">and</span> <span word="that">that</span> <span word="increased">increased</span> <span word="from">from</span> <span word="left">left</span> <span word="to">to</span> <span word="right">right</span>?</p><p> 比较题目：<span word="In">In</span> <span word="the">the</span> <span word="integer">integer</span> 3589 <span word="the">the</span> <span word="digits">digits</span> <span word="are">are</span> <span word="all">all</span> <span word="different">different</span> <span word="and">and</span> <span word="increase">increase</span> <span word="from">from</span> <span word="left">left</span> <span word="to">to</span> <span word="right">right</span>. <span word="How">How</span> <span word="many">many</span> <span word="integers">integers</span> <span word="between">between</span> 30000 <span word="and">and</span> 50000 <span word="have">have</span> <span word="digits">digits</span> <span word="that">that</span> <span word="are">are</span> <span word="all">all</span> <span word="different">different</span> <span word="and">and</span> <span word="that">that</span> <span word="increased">increased</span> <span word="from">from</span> <span word="left">left</span> <span word="to">to</span> <span word="right">right</span>?</p><p> <span word="If">If</span> <span word="p">p</span>, <span word="r">r</span>, <span word="m">m</span> <span word="are">are</span> <span word="three">three</span> <span word="different">different</span> <span word="prime">prime</span> <span word="numbers">numbers</span> <span word="greater">greater</span> <span word="than">than</span> 2, <span word="and">and</span> <span word="n">n</span>=<span word="pr">pr</span> <span word="m">m</span>, <span word="how">how</span> <span word="many">many</span> <span word="positive">positive</span> <span word="factors">factors</span>, <span word="including">including</span> 1 <span word="and">and</span> <span word="n">n</span>, <span word="does">does</span> <span word="n">n</span> <span word="have">have</span>?</p><p> 比较题目：<span word="If">If</span> <span word="p">p</span>, <span word="r">r</span>, <span word="m">m</span>, <span word="n">n</span>, <span word="t">t</span> <span word="and">and</span> <span word="s">s</span> <span word="are">are</span> <span word="six">six</span> <span word="different">different</span> <span word="prime">prime</span> <span word="numbers">numbers</span> <span word="greater">greater</span> <span word="than">than</span> 2, <span word="and">and</span> <span word="n">n</span>=<span word="prsmnt">prsmnt</span>, <span word="how">how</span> <span word="many">many</span> <span word="positive">positive</span> <span word="factors">factors</span>, <span word="including">including</span> 1 <span word="and">and</span> <span word="n">n</span>, <span word="does">does</span> <span word="n">n</span> <span word="have">have</span>?</p><p> <span word="If">If</span> <span word="someone">someone</span> <span word="throws">throws</span> <span word="a">a</span> <span word="dice">dice</span> <span word="twice">twice</span>, <span word="on">on</span> <span word="the">the</span> <span word="first">first</span> <span word="time">time</span> <span word="he">he</span> <span word="gets">gets</span> <span word="a">a</span> <span word="points">points</span>, <span word="and">and</span> <span word="on">on</span> <span word="the">the</span> <span word="second">second</span> <span word="he">he</span> <span word="gets">gets</span> <span word="b">b</span> <span word="points">points</span>, <span word="what">what</span> <span word="is">is</span> <span word="the">the</span> <span word="probability">probability</span> <span word="a">a</span>/<span word="b">b</span>1?</p><p> 比较题目：<span word="If">If</span> <span word="someone">someone</span> <span word="throws">throws</span> <span word="a">a</span> <span word="dice">dice</span> <span word="twice">twice</span>, <span word="what">what</span> <span word="is">is</span> <span word="the">the</span> <span word="probability">probability</span> <span word="that">that</span> <span word="the">the</span> <span word="point">point</span> <span word="he">he</span> <span word="gets">gets</span> <span word="on">on</span> <span word="one">one</span> <span word="throw">throw</span> <span word="is">is</span> <span word="bigger">bigger</span> <span word="than">than</span> <span word="the">the</span> <span word="other">other</span>?</p><p> </p>
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