Q3:
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?
A.	5
B.	6
C.	7
D.	8
E.	9
這題感覺好像問過??
但GWD的快速連結沒有
			
		

 

        
                