SOLUTION: In how many ways can 10 people arrange themselves I. In a row of 10 chairs? II. In a row of 7 chairs? III. In a circle of 20 chairs?

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Question 504454: In how many ways can 10 people arrange themselves
I. In a row of 10 chairs?
II. In a row of 7 chairs?
III. In a circle of 20 chairs?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
In how many ways can 10 people arrange themselves
I. In a row of 10 chairs?
Ans: 10!
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II. In a row of 7 chairs?
10P7 = 10!/3! = 604,800
III. In a circle of 20 chairs?
20C10 = 20!/10! = 6.7044X10^11
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Cheers,
Stan H.