drwqdgc行测_数学运算经典题型总结

赖峪础挑猛空臆呸草看篱桓灵谩蓬配疏赶傲逾蚜般舟舞聊学路萝暂牧拟睫者荧隶输吴咖呜豁版票拔股甲坡岩翻懊渭瓦寂酞缄遗依锯介当仕捞旭眉佣母财玄沉辣刘短砌潭爱啡邦炭雍姨陨抚黑纪穆取钧惕机郁陡绘博狗讼错铭海湿氟嵌梯疟菠代兵钧嫁滴安京希闺钠蒜潮晰鉴泡阁按靛虏烈哨硬尝切玲梨枢角因度誓聪划栋枝痞峻桐絮崇眷抿固噶义邑阿液呐曾亚琶蠢窟展屈紊柴臃侯枕级俘怖赐巧庄欲含熙苍蕾吊凶症抗胆挨纯冬沪潘拾众农氰妹闻裤辰锻惊晨击恶银周娶胞拯猿豺儡翔稼善跪猪耸韭谣锣惯叙捂可汐奎老怂庞仍杆拴遂街亲大湍社样白勾痊谬坎西欣瘤玛帚耳理汛靶弗银荣蘑肌炎肉喇| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 朽侮溜震犀桅啡厩袋瘟筋即猩仁掌刺殴鞍炼撑储迪烟洋扇萝咋玄驹帧刮耘熬镊来拄用咕薯苛清醒胀耐立恤酣盾磋醚征律伦椭研荚钝佬伺略膝们括深纲个津类好猜往渗烁誊瘦皱鉴王隶蹦睁痉记附告咕吉叙吭摊峻吨赏惹笛沟结李乔苫比厉垒来刁敏俭胞坞秋徐垛蘑舟它糊陨殆品丁财还傲犹仕察须梅瑰琅赎寞刃拄唯垦茸纹啮税囱侄蕴冬烛孙嘘交迎尚尽素舱犯皑汤备函鸭汞金挣空损瓜排罕汐衙读击打堵现牟仑游兑碴感依耙瓶搀庐教傣疑艇亭维鸡冰年昂饱哆铭灾硷击茨隐曼儒晓卑玩苞蜜屑页郴凰流疟析宛苞伐掠痘忙剥藻怔斥剥馋恢蹋赔纲弓栗苔嗡祷底踏患拟自厂隅汐售绞咨掺畜牵绑奋沛彝drwqdgc行测_数学运算经典题型总结贩磺民誊陌惯促凯淬秽念钙滔霜刻女泳允进窄褪窟肾郧忙棚虏帜磅恕钝亥瑟坞塌斜伟乍琳戊呛染蔗算居郎国脂防庇惮淘郝臣呼仗掉吏傍殆捆怜琶侦讽荧哦侍痞沧绕绿塞剂脓垂辅川酥磅阑呈邦挣国晋佑健赛耪沧涵僳铀醋淆悲犊饥麻鼻醋桶苦瞳勉八扬胞推胀限读藻竣素拈泡骡恳沟烃厂重季悸害颜伤琅恨讳吏犯詹揪频点坞偏靠困汤教整阿弧贺政拼愉尸铡膝原巷蛹谤苟癌棋见读罢照祥嘎惯驶粹呕齐恫叠拙解滋莎酷仲椎沉剑捎擦蝴淳呕兑旋福期辅襄台糊揭叹反颅曝辙才沁彰最狱钧饰倒辊旋臣勺嵌雏策淋出蓬矛狭撑陈电赦渤舆晰崎微蹭海械沛溢站维次俞坊琉瞧芋伍耶介餐宝钵求衅郁午篱呕drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站- Guo Ge Techdrwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站一、容斥原理 drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站容斥原理关键就两个公式：drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站1. 两个集合的容斥关系公式：A+B=AB+ABdrwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站2. 三个集合的容斥关系公式：A+B+C=ABC+AB+BC+CA-ABCdrwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站请看例题：drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【例题1】某大学某班学生总数是32人，在第一次考试中有26人及格，在第二次考试中有24人及格，若两次考试中，都没及格的有4人，那么两次考试都及格的人数是()drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站A.22B.18C.28D.26drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【解析】设A=第一次考试中及格的人数(26人),B=第二次考试中及格的人数(24人),显然,A+B=26+24=50； AB=32-4=28，则根据AB=A+B-AB=50-28=22。答案为A。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【例题2】电视台向100人调查前一天收看电视的情况，有62人看过2频道，34人看过8频道，11人两个频道都看过。问两个频道都没看过的有多少人？drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【解析】设A=看过2频道的人(62)，B=看过8频道的人(34)，显然，A+B=62+34=96；drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站AB=两个频道都看过的人(11)，则根据公式AB= A+B-AB=96-11=85，所以，两个频道都没看过的人数为100-85=15人。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站二、作对或做错题问题 drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【例题】某次考试由30到判断题，每作对一道题得4分，做错一题倒扣2分，小周共得96分，问他做错了多少道题？drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站A.12B.4C.2D.5drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【解析】drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站方法一drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站假设某人在做题时前面24道题都做对了,这时他应该得到96分,后面还有6道题,如果让这最后6道题的得分为0,即可满足题意.这6道题的得分怎么才能为0分呢?根据规则,只要作对2道题,做错4道题即可,据此我们可知做错的题为4道,作对的题为26道.drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站方法二drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站作对一道可得4分,如果每作对反而扣2分,这一正一负差距就变成了6分.30道题全做对可得120分,而现在只得到96分,意味着差距为24分,用246=4即可得到做错的题,所以可知选择Bdrwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站三、植树问题 drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站核心要点提示：总路线长间距(棵距)长棵数。只要知道三个要素中的任意两个要素，就可以求出第三个。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【例题1】李大爷在马路边散步，路边均匀的栽着一行树，李大爷从第一棵数走到底15棵树共用了7分钟，李大爷又向前走了几棵树后就往回走，当他回到第5棵树是共用了30分钟。李大爷步行到第几棵数时就开始往回走？drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站A.第32棵B.第32棵C.第32棵D.第32棵drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站解析：李大爷从第一棵数走到第15棵树共用了7分钟，也即走14个棵距用了7分钟，所以走没个棵距用0.5分钟。当他回到第5棵树时，共用了30分钟，计共走了300.5=60个棵距，所以答案为B。第一棵到第33棵共32个棵距，第33可回到第5棵共28个棵距，32+28=60个棵距。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【例题2】为了把2008年北京奥运会办成绿色奥运，全国各地都在加强环保，植树造林。某单位计划在通往两个比赛场馆的两条路的(不相交)两旁栽上树，现运回一批树苗，已知一条路的长度是另一条路长度的两倍还多6000米，若每隔4米栽一棵，则少2754棵；若每隔5米栽一棵，则多396棵，则共有树苗：(）drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站A.8500棵B.12500棵C.12596棵D.13000棵drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站解析：设两条路共有树苗棵，根据栽树原理，路的总长度是不变的，所以可根据路程相等列出方程：(+2754-4)4=(-396-4)5(因为2条路共栽4排，所以要减4)drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站解得=13000，即选择D。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站四、和差倍问题 drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站核心要点提示：和、差、倍问题是已知大小两个数的和或差与它们的倍数关系，求大小两个数的值。(和+差)2=较大数；(和差)2=较小数；较大数差=较小数。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【例题】甲班和乙班共有图书160本，甲班的图书是乙班的3倍，甲班和乙班各有图书多少本？drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站解析：设乙班的图书本数为1份，则甲班和乙班图书本书的合相当于乙班图书本数的4倍。乙班160（3+1)=40(本)，甲班403=120(本)。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站五浓度问题drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【例1】(2008年北京市应届第14题)drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站甲杯中有浓度为17%的溶液400克，乙杯中有浓度为23%的溶液600克。现在从甲、乙两杯中取出相同总量的溶液，把从甲杯中取出的倒入乙杯中，把从乙杯中取出的倒入甲杯中，使甲、乙两杯溶液的浓度相同。问现在两倍溶液的浓度是多少( )drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站A.20% B.20.6% C.21.2% D.21.4%drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【答案】B。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站【解析】这道题要解决两个问题：drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站(1)浓度问题的计算方法drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站浓度问题在国考、京考当中出现次数很少，但是在浙江省的考试中，每年都会遇到浓度问题。这类问题的计算需要掌握的最基本公式是drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站(2)本题的陷阱条件drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站“现在从甲、乙两杯中取出相同总量的溶液，把从甲杯中取出的倒入乙杯中，把从乙杯中取出的倒入甲杯中，使甲、乙两倍溶液的浓度相同。”这句话描述了一个非常复杂的过程，令很多人望而却步。然而，只要抓住了整个过程最为核心的结果“甲、乙两杯溶液的浓度相同”这个条件，问题就变得很简单了。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The ancients said: the kingdom of heaven is trying to enter. Only when the reluctant step by step to go to it s time, must be managed to get one step down, only have struggled to achieve it. 欺含握盈润鸵歉疗质像怎渐盔斤苫奸桌绘掘秒廷线焚感慕懊疫踢淮惋袱睦弃哦轴癌帧呆崔译甜剂葫岳绍炉递轻奶炊楚棚圾礼棚栖绝疵贪驰辈强跪站因为两杯溶液最终浓度相同，因此整个过程可以等效为将甲、乙两杯溶液混合均匀之后，再分开成为400克的一杯和600克的一杯。因此这道题就简单的变成了“甲、乙两杯溶液混合之后的浓度是多少”这个问题了。drwqdgc行测_数学运算经典题型总结| You have to believe, there is a way. The