SOLUTION: a group of 9 students need to give a presentation in class. how many different arrangement could be made

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Question 820869: a group of 9 students need to give a presentation in class. how many different arrangement could be made
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,

a group of 9 students need to give a presentation in class. 

how many different arrangement could be made?  9! 9%2A8%2A7%2A6%2A5%2A4%2A2%2A1

9 choices for the first speaker, 8 for the second and so on...