GRE助学重要知识之排列组合
<p> 排列:<span word="P">P</span></p><p> 组合:<span word="C">C</span></p><p> ..2/3 <span word="as">as</span> <span word="many">many</span> <span word="A">A</span> <span word="as">as</span> <span word="B">B</span>: <span word="A">A</span>=2/3<span word="B">B</span></p><p> ...<span word="twice">twice</span> <span word="as">as</span> <span word="many">many</span>... <span word="A">A</span> <span word="as">as</span> <span word="B">B</span>: <span word="A">A</span>=2<span word="B">B</span></p><p> <span word="power">power</span> 次方</p><p> <span word="reciprocal">reciprocal</span> 倒数</p><p> <span word="absolute">absolute</span> <span word="value">value</span> 绝对值</p><p> <span word="surface">surface</span> <span word="area">area</span> 表面积</p><p> <span word="volume">volume</span> 体积</p><p> <span word="nonzero">nonzero</span> 非零</p><p> <span word="average">average</span> 平均值</p><p> <span word="base">base</span> 底</p><p> <span word="tie">tie</span> 并列，齐平</p><p> <span word="speed">speed</span> 过度?</p><p> <span word="algebra">algebra</span> 代数</p><p> <span word="bisect">bisect</span> 平分</p><p> <span word="define">define</span> 定义/化简</p><p> <span word="denote">denote</span> 代表，表示</p><p> <span word="dimension">dimension</span> 维数</p><p> <span word="plane">plane</span> 平面</p><p> <span word="face">face</span> 立体图形的某一面</p><p> <span word="have">have</span> <span word="left">left</span> 剩余</p><p> <span word="slope">slope</span>斜率</p><p> <span word="intercede">intercede</span>截距</p><p> <span word="solution">solution</span>解</p><p> <span word="intersect">intersect</span> 相交</p><p> <span word="total">total</span> 总计</p><p> <span word="per">per</span> <span word="capita">capita</span> 每人</p><p> <span word="mid">mid</span> <span word="point">point</span> 中点</p><p> <span word="median">median</span> <span word="of">of</span> <span word="an">an</span> <span word="trangle">trangle</span> 三角形的中线</p><p> <span word="median">median</span> 中数</p><p> <span word="length">length</span></p><p> <span word="width">width</span></p><p> <span word="height">height</span>=<span word="altitude">altitude</span></p><p> <span word="in">in</span> <span word="terms">terms</span> <span word="of">of</span> 用...表达</p><p> <span word="be">be</span> <span word="contained">contained</span> <span word="in">in</span> 位于...上</p>
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