A committee contains six professors, three managers, and four coordinators. A subgroup of five is to be selected from the commit

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问题 A committee contains six professors, three managers, and four coordinators. A subgroup of five is to be selected from the committee. If Professor Dr. Wong and Manager Ms. Macy must be included, how many different subgroups can be selected? ________.

选项

答案165

解析委员会共有13人，现在其中2人一定要加入五人小组，只需要从剩下11人中选3人，为组合问题，答案为C₁₁³=

=165。

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A committee contains six professors, three managers, and four coordinators. A subgroup of five is to be selected from the commit

GRE QUANTITATIVE

GRE

Hismostimportant______wastheintroductionoftheseminarymethodofinstructionforadvancedstudents.

Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp

Aspecialresearchteamfromthelocalmedicalcenter【C1】______experimentsoncompletelyblindbabies.Thebabiestobetestedo

(77)Muchunfriendlyfeelingtowardscomputershasbeenbasedonthefearofwidespreadunemploymentresultingfromtheirintrodu

Byadoptingafewsimpletechniques,parentswhoreadtotheirchildrencangreatlyincreasetheirchildren’slanguagedevelopme

TheAmericanandtheBritish______alargenumberofsocialcustoms.

VisitorsfromtheUShaveincreased______8percentsincelastyear.

Asmileisastrongsignofafriendlyandopenattitudeandawillingnesstocommunicate.Itisapositive,silentsignsentwi

Both52and33arefactorsofn×25×62×73wherenisapositiveinteger.Whatisthesmallestpossiblevalueofn?

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5岁女孩，因发热、扁桃体化脓，口服抗生素和阿司匹林1周，突然呕吐深咖啡色液体50ml，潜血阳性。既往无胃肠病史及胃肠病家族史。该患儿的可能诊断是

患者刘某，20岁，自述气候变化而出现咳嗽、咳痰、胸闷、呼气性呼吸困难，烦躁不安伴哮鸣音，发绀明显，视诊桶状胸，诊断为支气管哮喘。如果对刘某进行预防性治疗常选用（）

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