把5个相同的羽毛球比赛规则放在甲,乙,丙三个不同的盒孑中有几种不同的放法.(允许有空盒子)

13.将4个不同的小球放入甲、乙、丙、丁4个盒子中,求恰有1个空盒的概率_百度作业帮
13.将4个不同的小球放入甲、乙、丙、丁4个盒子中,求恰有1个空盒的概率
13.将4个不同的小球放入甲、乙、丙、丁4个盒子中,求恰有1个空盒的概率
先算有一个空盒子的放法:相当于用三个盒子去选四个球,先在3个盒子每个中装一个球,剩下的一个球随便放入哪个盒都可以4*3*2*2*3=144再算总共的放法:每个球有四种放法,所以4*4*4*4=256所以就是144/256,约分后就是9/166.29小升初考试试题-博泰典藏网
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导读:郑州一中经开区实验学校小明的妈妈给小明买了一个智能手机,已知这个手机插上充电器从没有电到充满电需要2个小时;在非充电状态持续玩游戏,该充满电的手机可以工作8个小时.有一天小明打开手机准备玩游戏,发现手机提示仅剩20%的电量了,于是小明插上充电器开始一边玩一边充电,玩了1小时后,小明关上手机去学习了,问继续充电多少分钟才能将手机充满电?(待机耗电量忽略不计)有郑州一中经开区实验学校 小明的妈妈给小明买了一个智能手机,已知这个手机插上充电器从没有电到充满电需要2个小时;在非充电状态持续玩游戏,该充满电的手机可以工作8个小时.有一天小明打开手机准备玩游戏,发现手机提示仅剩20%的电量了,于是小明插上充电器开始一边玩一边充电,玩了1小时后,小明关上手机去学习了,问继续充电多少分钟才能将手机充满电?(待机耗电量忽略不计)有两袋水泥共重440千克,甲袋水泥被用掉了1/3,乙袋水泥被用掉了1/2,这时甲、乙两袋重量比为8:5,两袋水泥原来各重多少千克? 某商店将某种商品按进价提高35%,然后打出“九折优惠,外送50元代金弧钡墓愀,结果每件商品仍获利208元.问该商品每件的进价是多少元?一种原材料加工为成品以后,重量要减少15%,为了得到425千克的成品,至少需要多少千克原材料? 把5个相同的乒乓球放入甲,乙,丙三个不同的盒子内,有多少 种不同的放法.(允许有空盒子)加工一批零件,甲、乙两人合作30天可以完成,他们共同做了6天后,甲离开了,由乙继续做了40天才完成.如果这件工作由乙单独做需要多少天 甲乙两列火车同时从相距500千米的两地相对开出,4小时后没有相遇还相距20千米,已知甲车每小时行65千米,则乙车每小时行千米? 有4位同学在毕业聚会活动中进行纪念品的交换,任意两位同学之间最多交换一次,进行交换的两位同学互赠一份纪念品,已知4位同学之间共进行了5次交换,则收到3份纪念品的同学人数为人
有50个数,其平均数为42,如果去掉2个数,且这两个数的和为132,则剩下数的平均数是一个数的1/3比30的25%多1.5,则这个数是? 小于100的最大质数是? 在含糖率20%的糖水中,加入2克糖和8克水,这时糖水中糖和水的比是? 15和25的最小公倍数是?郑州枫杨外国语学校甲乙两个人,甲和乙的速度分别是60公里和84公里每小时,两人从AB两地相对行驶,相遇在C点,各自到达目的地后掉头行驶第二次相遇在D点。已知DC=420公里,求AB距离?12分 一个圆柱杯子直径8cm,高13cm,表面积 cm2,喝三杯有没有1500ml? (填有或者没有)6分甲乙两个人,甲和乙的速度分别是60公里和84公里每小时,两人从AB两地相对行驶,相遇在C点,各自到达目的地后掉头行驶第二次相遇在D点。已知DC=420公里,求AB距离?12分 1260第七题是3个男生2个女生站成一排,男女生必须隔开,问有几种排法,第九题是找规律填空,给3个田字格,按顺时针分别是①1,1,1,2②2,4,8,6③3,9,27,12④6,d,c,b问b+c=?一个圆柱杯子直径8cm,高13cm,表面积
cm2,喝三杯有没有1500ml?
(填有或者没有)6分 第三题好象是有37棵树,原来间隔5米一棵,现在变成间隔6米一棵问几棵树不用移栽? 甲乙完成一项工程。甲单干24天完成,乙单干30天完成。甲乙一起干,工效提高三分之一。甲乙合干五分之一后,每小时少干了21个,干了12小时干完。求总工作量。甲乙两个人,甲和乙的速度分别是60公里和84公里每小时,两人从AB两地相对行驶,相遇在C点,各自到达目的地后掉头行驶第二次相遇在D点。已知DC=420公里,求AB距离?12分郑州市实验外国语中学几何题,阴影面积等于大圆面积加两个小半圆面积的和减三角形面积 甲乙丙三人都要从A地到B地去,甲有一辆摩托车每次只能带一个人,甲每小时可以行44千米,乙丙的步行速度为每小时4千米,已知AB两地相距49千米.求三人同时到达的时间为多少小时?郑州中原一中实验学校 (桐柏一中)小华有一部智能手机,充电两小时能充满,工作6小时才能用完电。一天小华想玩游戏发现手机只有百分之十的电了,就边充电边玩。玩了一个小时,小华去吃饭了。问还要几小时才能充满电?还有一道是说把90分为4个整数。一个整数加2等于一个整数减2等于一个整数乘2等于一个整数除以2。问这几个整数分别是几? 超过100的最小质数是多少 “好好学习,天天向上”是毛主席五十多年前给一名小学生的题词,但几十年来它却激励了几代中国人,成为许多青少年的座右铭,在《现代汉语规范词典》上“学”、“向”、”上&三个字分别在1486页、1475页和1141页。那么,”好“、”习“、”天“三个字应该分别在哪页?A.
D.83应该是好,习,天吧 答案A,不看题,看答案,第三个数三个1283,可以排除C,剩下A、B、D第一项D和其他不一样排掉,A、B、D第二项B和A、D不一样排他,所以答案为A 30个数,它们的平均数是18.从中去掉两个数,这两个数的和是64.请问剩下数的平均数是多少?今年妹妹的年龄是姐姐的二分之一,9年前妹妹的年龄是姐姐的五分之一,求妹妹的年龄常识题,主要考察音序,通过声母可以判断“天”字应该在“上”字之后,,即1141页之后,可以排除掉C,根据“好”可以排出D,而“习”和“向”韵母比较相似,应该相差页数最近,故在A、B两项中。作文题,从学生的角度谈三观倾向性;可以从教师角度谈教育的引导性;可以从家长角度谈家庭细节对孩子 言行影响;可以从社会角度谈教育的缺失与忧患 还有一道是说把90分为4个整数。一个整数加2等于一个整数减2等于一个整数乘2等于一个整数除以2。问这几个整 ... 有5个球,有甲乙丙三个盒子,问有几种方法【可以全放在一个盒子里】 一杯含糖40%的糖水,加入4克糖,6克水,糖与水的比是 30个数,它们的平均数是18.从中去掉两个数,这两个数的和是64.请问剩下数的平均数是多少? 还有一道是说把90分为4个整数。一个整数加2等于一个整数减2等于一个整数乘2等于一个整数除以2。问这几个整数分别是几? 包含总结汇报、计划方案、行业论文、外语学习、表格模板、经管营销、教学研究、人文社科、党团工作以及 6.29小升初考试试题等内容。
相关内容搜索有三个盒子,五个完全一样的羽毛球,将羽毛球放入盒子里,有几种放法_百度知道
有三个盒子,五个完全一样的羽毛球,将羽毛球放入盒子里,有几种放法
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三完全盒:五种放三盒:15种放
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出门在外也不愁现有3个互不相同的盒子和5个互不相同的球,要将这5个球放入3个盒子中,且不允许有空盒子。则有多少种_百度知道
现有3个互不相同的盒子和5个互不相同的球,要将这5个球放入3个盒子中,且不允许有空盒子。则有多少种
现3互相同盒5互相同球要<img class="word-replace" src="/api/getdecpic?picenc=0a007a球放入3盒且允许空盒则少种放
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Group discussions are only accessible to members of the group. To request membership, click Join.sfdhaDiscussions0 discussions.Members0 memberslocationGreater New York City AreaindustryConstructionCurrentFacilities Assistant Project Manager at LazardPastIntern-Project Manager at Syracuse Habitat for Humanity (SHFH), Intern- Facilities Assistant at Lazard, Building Inspector at J.C....EducationState University of New York College of Environmental Sciences and Forestry, Syracuse University - Martin J. 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Experience in a host of activities including strategic...locationSyracuse, New York AreaindustryNonprofit Organization ManagementCurrentExecutive Director at George & Rebecca Barnes FoundationPastMarketing Executive at CNY Central (WSTM NBC-3/WTVH CBS-5/WSTQ CW-6), Director of Resource Development at Syracuse Habitat for Humanity...EducationCazenovia College, Cazenovia College, Chittenango High SchoolSummaryA hardworking professional who has a passion for working with non-profit organizations. 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