north:8中取4,
south 6中取3,
用組合數(shù),相乘,得1400
選C
高中數(shù)學(xué)題,關(guān)于概率與統(tǒng)計(jì)的,急需答案!
高中數(shù)學(xué)題,關(guān)于概率與統(tǒng)計(jì)的,急需答案!
A real estate company with 8 employees in their north office and6 in their south office is planning to lay off 7 employees.If they decide to lay off 4 employees from the north office and 3 from the south office, in how many ways can this be done?
a)12 ways b)48 ways c)1400 ways d)none of these
A real estate company with 8 employees in their north office and6 in their south office is planning to lay off 7 employees.If they decide to lay off 4 employees from the north office and 3 from the south office, in how many ways can this be done?
a)12 ways b)48 ways c)1400 ways d)none of these
英語人氣：373 ℃時(shí)間：2020-01-26 17:12:21
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