新GRE数学考点：Set
<p> 今天针对新<span word="gre">gre</span>数学复习，小编给大家整理的是关于<span word="Set">Set</span>的相关内容，这些概念在考试中一定会考到的。希望考生能再接再厉，取得一个好成绩，突破新<span word="gre">gre</span>数学难的困境。</p><p> <span word="Set">Set</span></p><p> <span word="A">A</span> <span word="set">set</span> <span word="is">is</span> <span word="a">a</span> <span word="collection">collection</span> <span word="of">of</span> <span word="objects">objects</span> <span word="or">or</span> <span word="things">things</span>. <span word="Each">Each</span> <span word="object">object</span> <span word="in">in</span> <span word="a">a</span> <span word="set">set</span> <span word="a">a</span> <span word="member">member</span> <span word="or">or</span> <span word="element">element</span> <span word="of">of</span> <span word="that">that</span> <span word="set">set</span>.<span word="Size">Size</span> <span word="of">of</span> <span word="a">a</span> <span word="set">set</span> <span word="is">is</span> <span word="the">the</span> <span word="number">number</span> <span word="of">of</span> <span word="members">members</span> <span word="in">in</span> <span word="the">the</span> <span word="set">set</span>.</p><p> <span word="Example">Example</span>:</p><p> <span word="The">The</span> <span word="set">set</span> <span word="of">of</span> <span word="even">even</span> <span word="numbers">numbers</span> <span word="between">between</span> 2 <span word="and">and</span> 10 <span word="is">is</span> <span word="of">of</span> <span word="size">size</span> 5:{2,4,6,8,10}.</p><p> <span word="The">The</span> <span word="set">set</span> <span word="of">of</span> <span word="primes">primes</span> <span word="between">between</span> 2 <span word="and">and</span> 10 <span word="is">is</span> <span word="of">of</span> <span word="size">size</span> 4:{2,3,5,7}.</p><p> <span word="Remember">Remember</span>:</p><p> <span word="Each">Each</span> <span word="member">member</span> <span word="of">of</span> <span word="set">set</span> <span word="A">A</span> <span word="belongs">belongs</span> <span word="to">to</span> <span word="A">A</span> <span word="or">or</span> <span word="is">is</span> <span word="in">in</span> <span word="the">the</span> <span word="set">set</span> <span word="A">A</span>.</p><p> <span word="A">A</span> <span word="set">set</span> <span word="can">can</span> <span word="not">not</span> <span word="have">have</span> <span word="repeating">repeating</span> <span word="member">member</span>:{1,3,1,2}<span word="is">is</span> <span word="not">not</span> <span word="a">a</span> <span word="set">set</span>.</p><p> <span word="Rearranging">Rearranging</span> <span word="the">the</span> <span word="order">order</span> <span word="of">of</span> <span word="the">the</span> <span word="members">members</span> <span word="does">does</span> <span word="not">not</span> <span word="change">change</span> <span word="the">the</span> <span word="set">set</span>:{1,2,3}<span word="is">is</span> <span word="same">same</span> <span word="as">as</span>{3,2,1}.</p><p> 俗话说：工欲善其事必先利其器。有一部分考生认为新<span word="GRE">GRE</span>数学具有一定的难度，这其中的原因是由于考生在复习时没有把新<span word="gre">gre</span>数学的基础打牢。想要新<span word="gre">gre</span>数学考好，复习的时候一定要把基本概念和重要考点都弄扎实。</p><p> </p><p> </p>
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