GMAT考试1-GMAT数学12月总结(五)
<p> 82.1.2的80%?</p><p> 83.<span word="Give">Give</span> <span word="the">the</span> <span word="English">English</span> <span word="definition">definition</span> <span word="of">of</span> <span word="standard">standard</span> <span word="deviation">deviation</span>, 2 <span word="or">or</span> 3 <span word="lines">lines</span>, <span word="there">there</span> <span word="are">are</span> 4 <span word="numbers">numbers</span>, 9, 8, 7, 4, <span word="ask">ask</span> <span word="the">the</span> <span word="standard">standard</span> <span word="deviation">deviation</span> <span word="of">of</span> <span word="these">these</span> 4 <span word="numbers">numbers</span>。<span word="ANS">ANS</span>:根号下14</p><p> 84.3个不同的旗子排列视为一个信号，有四面不同的旗子，可排成几个信号?<span word="ANS">ANS</span>：24</p><p> 85.<span word="A">A</span>数列有5个数,<span word="w">w</span>,<span word="x">x</span>,<span word="y">y</span>,<span word="z">z</span>,<span word="t">t</span>, 问下面哪个数列的<span word="sd">sd</span>和<span word="A">A</span> 相同?</p><p> |<span word="w">w</span>|,|<span word="x">x</span>|,|<span word="y">y</span>|,|<span word="z">z</span>|,|<span word="t">t</span>|</p><p> 1/<span word="w">w</span>,1/<span word="x">x</span>,1/<span word="y">y</span>,1/<span word="z">z</span>,1/<span word="t">t</span></p><p> 7<span word="w">w</span>,7<span word="x">x</span>,7<span word="y">y</span>,7<span word="z">z</span>,7<span word="t">t</span>,7<span word="t">t</span></p><p> <span word="w">w</span>^2,<span word="x">x</span>^2,<span word="y">y</span>^2,<span word="x">x</span>^2,<span word="t">t</span>^2</p><p> <span word="w">w</span>-7,<span word="x">x</span>-7,<span word="y">y</span>-7,<span word="z">z</span>-7,<span word="t">t</span>-7</p><p> 我不知道选什么</p><p> 86.<span word="a">a</span> <span word="jogger">jogger</span>\\\\\\<span word="s">s</span> <span word="speed">speed</span> <span word="is">is</span> 10 <span word="kelometer">kelometer</span> <span word="per">per</span> <span word="hour">hour</span>, <span word="walker">walker</span> 6<span word="k">k</span>/<span word="hour">hour</span>, 有个<span word="water">water</span> <span word="foundation">foundation</span> , <span word="if">if</span> <span word="the">the</span> <span word="jogger">jogger</span> <span word="pass">pass</span> <span word="the">the</span> <span word="water">water</span> <span word="foundation">foundation</span> <span word="after">after</span> <span word="passing">passing</span> <span word="the">the</span> <span word="walker">walker</span>, <span word="howmany">howmany</span> <span word="minitutes">minitutes</span> <span word="does">does</span> <span word="the">the</span> <span word="jogger">jogger</span> <span word="pass">pass</span> <span word="the">the</span> <span word="water">water</span> <span word="foundation">foundation</span> <span word="before">before</span> <span word="the">the</span> <span word="walker">walker</span>.</p><p> 87. 有两个人存了相同的一笔钱到银行,<span word="A">A</span>是按照每月<span word="x">x</span>% 复利记息,<span word="B">B</span>是按照每年<span word="y">y</span>%复利记息,问,一年后,若两人获得相同的利息,</p><p> 两人存的钱是</p><p> <span word="x">x</span>=7</p><p> 88.<span word="Buy">Buy</span> <span word="with">with</span> <span word="the">the</span> <span word="wholesale">wholesale</span> <span word="price">price</span>, <span word="and">and</span> <span word="sell">sell</span> <span word="as">as</span> 10% <span word="discount">discount</span> <span word="as">as</span> <span word="the">the</span> <span word="list">list</span> <span word="price">price</span>, <span word="a">a</span> 20% <span word="profit">profit</span> <span word="on">on</span> <span word="the">the</span> <span word="wholesale">wholesale</span> <span word="price">price</span>, <span word="what">what</span> <span word="is">is</span> <span word="the">the</span> <span word="list">list</span> <span word="price">price</span>..</p><p> <span word="Answer">Answer</span> : 120</p><p> 89.<span word="The">The</span> <span word="range">range</span> <span word="of">of</span> 1/2 + 1/2^2+ 1/2^3+.+1/2^10</p><p> <span word="A">A</span>: 01/2 <span word="B">B</span>: 2/3---1 <span word="C">C</span> <span word="cannot">cannot</span> <span word="remember">remember</span> , <span word="I">I</span> <span word="forget">forget</span> <span word="the">the</span> <span word="formual">formual</span> <span word="for">for</span> <span word="this">this</span></p>
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