【OG20-P277-277题】In a real estate office that employs n salespeopl_OG19新题

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【OG20-P277-277题】

In a real estate office that employs n salespeople, f of them are females and x of the females are new employees. What is the value of n ?(1)If an employee were randomly selected from the n employees, the probability of selecting a female would be 23 (2)If an employee were randomly selected from the f female employees, the probability of selecting a new employee would be 12

A

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
分析A选项
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B

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
分析B选项
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C

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
分析C选项
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D

Each statement ALONE is sufficient.
分析D选项
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E

Statements (1) and (2) TOGETHER are NOT sufficient.
分析E选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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当前版本由 huan~ 更新于2018-09-06 14:20:20 感谢由 huan~ 对此题目的解答所做出的贡献。

条件1：f/n=2/3，f未知，不充分

条件2：x/f=1/2，不充分

结合：不充分

题目讨论（7条评论）

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emily666

这也可以。。

0 0 回复 2020-03-17 20:43:38
Stanley想去荷兰

有毛病吧，f不是已经给出了吗？

0 0 回复 2019-12-28 14:07:02
prayer

这怎么确定f算已知还是未知啊……

0 0 回复 2019-07-18 11:18:13
210457ynqsj回复prayer

同问

0 0 回复 2019-08-16 11:12:05
Appler

+1 哭晕

0 0 回复 2019-01-11 23:32:44
独一无二的张喜喜

我竟然把f当成已知处理了，，，，唉因为没有任何给定的准确数字，所以无论如何都是算不出的选e

0 0 回复 2018-12-30 16:02:13
嘻嘻嘻521

neither of f and x is exact number

0 0 回复 2018-11-28 15:48:22
Adam贾

this problem can not be solved because,there is no number provided for us to calculate,so whatever how many solutions it gives,we still can not solve it.

0 0 回复 2018-10-26 12:16:14