GMAT数学真题140道（3）
<p> 下面为大家整理了<span word="GMAT">GMAT</span>数学真题140道（3），供考生们参考，以下是详细内容。</p><p> 91. <span word="DS">DS</span>: <span word="a">a</span>, <span word="b">b</span>, <span word="c">c</span>, <span word="d">d</span> 是四个个位正整数，<span word="some">some</span> <span word="or">or</span> <span word="all">all</span> <span word="of">of</span> <span word="which">which</span> <span word="are">are</span> <span word="equal">equal</span>。现在它们组成了3个两位数，<span word="ab">ab</span> <span word="cd">cd</span> <span word="bc">bc</span>，问：<span word="ab">ab</span>+<span word="cd">cd</span> = <span word="a">a</span>+<span word="bc">bc</span>+<span word="d">d</span>是否成立?</p><p> 1)<span word="a">a</span>=<span word="b">b</span>-<span word="c">c</span></p><p> 2) <span word="d">d</span>=<span word="b">b</span>-<span word="c">c</span></p><p> 其实不难，因为<span word="ab">ab</span> = 10<span word="a">a</span>+<span word="b">b</span>, <span word="cd">cd</span> = 10<span word="c">c</span>+<span word="d">d</span>, <span word="bc">bc</span>=10<span word="b">b</span>+<span word="c">c</span>, 题干中带入联立等式，最后等于9=0，所以要等式成立，必须<span word="a">a</span>=<span word="b">b</span>-<span word="c">c</span>，所以我选<span word="A">A</span></p><p> 92. <span word="DS">DS</span>：大意就是0.0015 <span word="percent">percent</span>是否小于以下的数?</p><p> 1)4.510^</p><p> 2) 9.5 10^</p><p> 这个题目的陷阱是：不要忘记0.0015 <span word="percent">percent</span> = 0.000015! 这是我的最后一题，一开始差点觉得怎么那么简单，后来一看，有个<span word="percent">percent</span>...</p><p> 93. 480个人，其中35%的人参加了昨晚的音乐会，25%的人是音乐家，15%的人是音乐家且出席了昨晚的音乐会，问你有多少音乐家没参加音乐会。我计算的答案是48。</p><p> 94. 15个人，学<span word="A">A</span>语言的有1/3，<span word="B">B</span>的有2/5，<span word="C">C</span>的有2/3，三种都学的有1人，没人都至少学一种以上语言，问你学两种的有几人?应该是3人。</p><p> 95. <span word="x">x</span>=3<span word="y">y</span>=6<span word="z">z</span>，<span word="xyz">xyz</span>都是正整数，问下列哪个是<span word="x">x</span>,<span word="y">y</span>,<span word="z">z</span>的公约数?我记得我选了45。</p><p> 96. <span word="DS">DS</span>：某人有3种钱，面值分别是1,5,10。某人一共有90元钱，问你能否确定三种面值的钱各有多少?</p>
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