徐永強數學-p-set2-42

由 **邁向高等學府** » 2005-05-22 15:34

In a group of 8 semifinalists, all but 2 will advance to the final round. If in the final round only the top 3 will be awarded medals then how many groups of medal winners are possible?
a. 20
b. 56
c. 120
d.560
e. 720
答案為B...
可是我算D耶…

由 **nicoleliu** » 2005-05-23 00:31

這題我也算D耶~
C86*C63=560

請問是哪裡有問題ㄋ?? :^)

徐永強數學-p-set2-42

徐永強數學-p-set2-42

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