数学试题讨论稿第三篇（66--100）
<p> 66. <span word="x">x</span>=0,<span word="x">x</span>?</p><p> <span word="x">x</span>^2-2<span word="x">x</span>-15非0</p><p> <span word="x">x</span>^2-7<span word="x">x</span>非0</p><p> <span word="SA">SA</span>:大家注意下这一题 如果是<span word="c">c</span> 那怎么解释呢 <span word="x">x</span>不是无解了??</p><p> 我想是不是问唯一解 选<span word="A">A</span></p><p> 67. <span word="x">x</span>非零整数 <span word="x">x</span>能被几除? <span word="I">I</span>. 3 <span word="II">II</span>.忘了 <span word="III">III</span>.6 答案<span word="I">I</span> <span word="III">III</span></p><p> <span word="SA">SA</span>: <span word="agree">agree</span></p><p> 68. 以两点为以正方形的对角线，问周长 答案 好像10根号2</p><p> <span word="SA">SA</span>:<span word="agree">agree</span></p><p> 69. <span word="x">x</span>^2-6<span word="xy">xy</span>+9<span word="y">y</span>^2=16, ^4=? 答案 256</p><p> 70. 表示不小于<span word="X">X</span>的最小整数，是否0?</p><p> =0</p><p> =0 答案 <span word="B">B</span></p><p> <span word="SA">SA</span>: <span word="B">B</span></p><p> 71. 一个人为子女存钱，每月会比上个月多存一定数目的钱，一开始存800，第7个月存的钱是第3个月的两倍，问每个月比上个月多存多少? 答案 800</p><p> <span word="SA">SA</span>:800 ...800+7<span word="X">X</span>=2</p><p> 这题有争议，这个答案是<span word="jj">jj</span>作者给的答案，<span word="jj">jj</span>作者考了数学满分，所以就按他的答案做了，大家上场看清楚题目，应该差不多。</p><p> 72. 一个盒子33<span word="inch">inch</span>的底，11<span word="inch">inch</span>的高，问<span word="upright">upright</span>放到一个39<span word="feet">feet</span>，1<span word="foot">foot</span>高的盒子中，最多放多少个? 答案好像是432</p><p> <span word="SA">SA</span>: 432 <span word="There">There</span> <span word="are">are</span> <span word="twelve">twelve</span> <span word="inches">inches</span> <span word="in">in</span> <span word="a">a</span> <span word="foot">foot</span>. 39<span word="suqre">suqre</span> <span word="feet">feet</span>=391212 <span word="square">square</span> <span word="inchs">inchs</span> <span word="upright">upright</span>指正着放把 底在下面</p><p> <span word="n">n</span>=391212/33=432</p><p> 73. <span word="A">A</span>机器干某事，10,000的量用了8小时，和<span word="B">B</span>一起干用了6小时，问<span word="B">B</span>单独干每小时干多少?</p>
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