a)How many cards must be selected from a standard deck of 52

橘子味的海2022-10-04 11:39:541条回答

a)How many cards must be selected from a standard deck of 52 cards to guarantee that at least three cards of the same suit are chosen?
b)How many must be selected to guarantee that at least three hearts are selected?

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laopobaobao 共回答了17个问题 | 采纳率94.1%
抽屉原理及最差原则
建立抽屉,4种花色看做4个抽屉,考虑最差情况:
(1)前8张,每种花色各两张
那么再抽出任意一张,前面8张中肯定与这张花色相同
即至少要抽出8+1=9张
(2)黑桃占13张,红桃占13张,其余的占26张,所以至少要取26+3=29张
1年前

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document表示网页文档!
form[0]表示第一个form元素
AREA_SLA_ID表示该form中的这个ID的元素
selectedIndex表示上边的元素选择第一个!
英语翻译You have selected [E-MAIL] confirmation process.Please p
英语翻译
You have selected [E-MAIL] confirmation process.
Please print your member ID,e-mail address and put a title as "Foreigner Registration"
After this process is completed,we will send you an E-mail within 24 hours.
You may not use services until confirmation process is completed.
hbgx8421年前2
tinkie 共回答了22个问题 | 采纳率90.9%
你已经选择了E-mail确定系统
请您输入你的会员ID号,E-mail地址并以标题“国外注册”;
在这些步骤完成后,我们将会在24小时内给你发E-mail
当这些步骤都完成了你才可以使用本服务.
i selected will be definitely insist on.
sweetea1年前4
sykof 共回答了16个问题 | 采纳率93.8%
我将坚持我的选择
英语翻译求英语数学大神翻译一道英文分布方面的数学题,10 randomly selected packets of cr
英语翻译
求英语数学大神翻译一道英文分布方面的数学题,
10 randomly selected packets of crisps are put in a family pack.from a sample of 20 randomly selected family packets find the probability that no family packets will have more than 4 packets of ready salted.
a crisp manufacture produces ready salted and flayoured crisps,30%of the packets produced are ready salted,a random sample of 10 packets of crisps are taken 这个是题干
lanyuecao1年前1
河漪 共回答了14个问题 | 采纳率92.9%
随机选择10包薯片放在家庭装.从20个随机选择的样本家庭包中找到不超过4包已经加盐的家庭包的可能性
SelectedIndex = 0;是啥意思?
SelectedIndex = 0;是啥意思?
SelectedIndex = 0;与SelectedIndex = =0;的区别是?
et16zp1年前1
menyi1009 共回答了18个问题 | 采纳率94.4%
前者是赋值,后者是判断!
hammer3.5转换实体时出现there are no eligible selected objects
Alice161年前1
gosensen 共回答了15个问题 | 采纳率100%
你是不是选中固体之后就直接右键→属性了?
或者你是不是转实体之后再看它的属性,他又处于未被选中状态?
必须是“选中→右键→转换为实体”转实体,而且查看属性时保持选中状态才行.
the teacher asked them to ______ the selected material after
the teacher asked them to ______ the selected material after class.
A.go overB.take outC.skim onD.examine with
肖振海不是神1年前1
妖之翼 共回答了9个问题 | 采纳率88.9%
A 意思是老师让他们课后在检查遍筛选出的材料
英语翻译You have selected [Fax] confirmation process.Please prin
英语翻译
You have selected [Fax] confirmation process.
Please print your member ID,e-mail address and put a title as "Foreigner Registration"
After this process is completed,we will send you an E-mail within 24 hours.
You may not use services until confirmation process is completed.
onedaybb1年前2
lyaner 共回答了24个问题 | 采纳率100%
你已经选择 [传真]证实程序.
请印刷你的成员身份证,电子邮件帐号而且放了名称如 "外国人登记"
在这一个程序之后被完成,我们在 24个小时内将会寄给你一份电子邮件.
你直到证实程序被完成不可能使用服务.
翻译
A customer at a 7-11 store selected four items to buy,and wa
A customer at a 7-11 store selected four items to buy,and was told that the cost was $7.11.
霜竹1年前2
330863001 共回答了21个问题 | 采纳率90.5%
一个顾客在一个7-11 商店选择了四件商品,被告知需要支付的总额是7.11美元
开机要按F1,显示Boot Selection Popup menu has been selected.
开机要按F1,显示Boot Selection Popup menu has been selected.
COMS Settings Wrong.要怎么样才能解决开机不按F1就能进入的问题?
策马随缘漫探花1年前1
猛龙110 共回答了21个问题 | 采纳率90.5%
COMS Settings Wrong(cmos 设置错误)
先加载默认设置(Load Fail-Safe Defaults或Load Optimized Defaults)
后Standard CMOS Features--Halt On (设为No Errors)
Drive A和B (设为None)
即可消除开机按F1
英语翻译1.Quality characteristics are selected as targets for ex
英语翻译
1.quality characteristics are selected as targets for experiments — suitable characteristics are selected to specify the target value.
2.effective control factors and their levels are determined,which is the key to a successful use of the taguchi experiment method.
3.a proper orthogonal array for the control factors is selected.the degrees of *** for the orthogonal array should be greater than or equal to the degrees of *** of process parameters.
4.an appropriate formulation of quality characteristics and the s/n ratio are selected.a loss function is defined to calculate the difference between the experimental and desired values of s/n.there are three categories in an analysis of the s/n ratio:lower-the-better,higher-the-better,and nominal-the-better.
5.the loss function is transformed into the s/n ratio according experimental data,which is used to determine the deviation of the quality characteristic from its target value.
6.auxiliary tables and response diagrams are used to distinguish the influence of quality characteristics with various factors.the significance of the factors is identified,and the data obtained are analyzed using the anvoa.
Amstrong991年前1
谁用我了的9527 共回答了16个问题 | 采纳率100%
1、质量特性被作为实验目标---合适的特性被用做规范目标值
2、设定有效的控制因素,这是有效利用田口测试方法的关键.
3、选择合适的控制因素正交列阵,正交列阵自由度与过程参数自由度同样重要甚至更加关键.
4、选择适当的质量参数规定和信噪比.设置一个损耗函数以用来计算信噪比的实验值和设定值之间的差别.对信噪比的分析分为三种情况:越低越好、越高越好、越接近标值越好.
5、利用实验数据通过损耗函数计算出信噪比,从而确定质量参数与目标值的偏差.
6、附属表格和响应曲线图可以用来分析各种有效因素以消除影响质量参数的问题.确定各种因素的重要性和意义,并对获得的数据进行ANVOA分析(方差分析).
英语翻译The Selected Poems of Li Bai was published long ago.怎么翻译
英语翻译
The Selected Poems of Li Bai was published long ago.
怎么翻译?
娃哈哈g7b1年前2
cfgzxy 共回答了13个问题 | 采纳率92.3%
《李白诗选集》很早以前就发表了
selectedIndex有什么用?
selectedIndex有什么用?
比如有一个语句:
i=document.form1.heading.selectedIndex;
headcolor=document.form1.heading.options[i].value;
其中的selectedIndex是什么意思啊
星星x亮了1年前1
nn浪子心霸 共回答了17个问题 | 采纳率88.2%
selectedIndex代表的是你所选中项的index.
英语翻译Warning:None of the selected objects are animated by a m
英语翻译
Warning:None of the selected objects are animated by a motion path with the Follow option
非老色否1年前1
lchxz 共回答了12个问题 | 采纳率75%
警告:所选择的目标文件的路径不存在
通常你删除了刚才使用的目录后,再次后退到那里那个目录无法显示.
Researches selected poor,minority campuses where obesity rat
Researches selected poor,minority campuses where obesity rates and diabetes risk are higher.Among those is White Elementary,which is just off a busy interstate highway on the city's poor east side,on a street dotted with fast-food restaurants and taquerias.
In Bexar County,where the five pilot schools are located,33 percent of children living in poverty are obese.
Researchers warn that obesity is not always the result of children eating too many calories.A previous study by the nonprofit center reported that 44 percent of children studied consumed calories below daily minimum requirements,but nearly one-third were still obese.Seven percent screened positive for type 2 diabetes.
Mark Davis,the school's principal,said getting consent from parents hasn't been a problem.He suspects the small number of parents who withhold consent don't understand the project,perhaps thinking it limits what their child can eat at school.
luisa_angel1年前1
金贝子 共回答了22个问题 | 采纳率95.5%
研究选定的贫穷,少数校园肥胖和糖尿病风险率比较高.在那些是白色的小学,是刚刚下一个繁忙的州际高速公路对城市贫困人口的东侧,大街上点缀着快餐店、taquerias.
在Bexar县,那里的五个飞行员学校所在地,33%的儿童生活在贫困存在肥胖问题.
研究人员警告说肥胖并不总是结果的孩子吃过多的卡路里.此前的一项研究报道,由非盈利中心研究了44%的儿童消耗卡路里低于每日最低要求,但是近三分之一仍然是肥胖.筛选阳性百分之七2型糖尿病.
马克·戴维斯,学校的校长说,父母还没得到同意这问题了.他怀疑这一小部分父母隐瞒同意不了解项目的范围内,也许正在思考他们的孩子能吃在学校.