高中数学题,关于概率与统计的,急需答案!Arealestat-查字典问答网
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  高中数学题,关于概率与统计的,急需答案!Arealestatecompanywith8employeesintheirnorthofficeand6intheirsouthofficeisplanningtolayoff7employees.Iftheydecidetolayoff4employeesfromthenorthofficeand3fro

  高中数学题,关于概率与统计的,急需答案!

  Arealestatecompanywith8employeesintheirnorthofficeand6intheirsouthofficeisplanningtolayoff7employees.Iftheydecidetolayoff4employeesfromthenorthofficeand3fromthesouthoffice,inhowmanywayscanthisbedone?

  a)12waysb)48waysc)1400waysd)noneofthese

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2020-09-0100:02
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吕思义

  north:8中取4,

  south6中取3,

  用组合数,相乘,得1400

  选C

2020-09-01 00:04:13
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