你們真的是天手才高, 我發現喜歡數學 & 解題 是二碼子事
再讓我拜託一下......
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?
thanksssssssssssssss