Problem Solving
试题详情
题目：
A certain company assigns employees to offices in such a way that some of the offices can be empty and more than one employee can be assigned to an office. In how many ways can the company assign 3 employees to 2 different offices?
选项:
A、5
B、6
C、7
D、8
E、9
答案:
D
提问：
A certain company assigns employees to offices in such a way that some of the offices can be empty and more than one employee can be assigned to an office. In how many ways can the company assign 3 employees to 2 different offices?
5
6
7
8
9
要是计算答案是2的3次方，答案为8。但是我理解 3 employees 是没区分的啊！所以情况小于八种。请老师解答。
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