SAT 数学题 谁给解释一下?Of 5 employees, 3 are to be assigned an office and 2 are to be assigned a cubicle. If 3 of the employees are men and 2 are women, and if those assigned an office are to be chosen at random, what is the probability tha
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SAT 数学题 谁给解释一下?Of 5 employees, 3 are to be assigned an office and 2 are to be assigned a cubicle. If 3 of the employees are men and 2 are women, and if those assigned an office are to be chosen at random, what is the probability tha
SAT 数学题 谁给解释一下?
Of 5 employees, 3 are to be assigned an office and 2 are to be assigned a cubicle. If 3 of the employees are men and 2 are women, and if those assigned an office are to be chosen at random, what is the probability that the offices will be assigned to 2 of the men and 1 of the women?
5名员工,3个人可以分到办公室,2个分到隔间,3男2女 随机安排,有多少种可能性,分到办公室的人为2男1女?
答案是 3/5 可是为什么啊?这种题应该怎么做?
谢谢 各位,列举我是明白了,可是这从5中选3个有什么公式什么之类的吗,阶乘如何乘?
SAT 数学题 谁给解释一下?Of 5 employees, 3 are to be assigned an office and 2 are to be assigned a cubicle. If 3 of the employees are men and 2 are women, and if those assigned an office are to be chosen at random, what is the probability tha
由题知从五人中随机抽三人去办公室有10种而要使其为两男一女那么就是在男的中随机抽两女的中随机抽一计算得为6所以概率为3/5也可理解为要达到上述条件到隔间去的人必为一男一女那麽同样是3/5