<PRE><B>Question 337091</B>
A teacher is to be assigned to teach 5 different courses in 5 different class periods on Mondays. If exactly one course meets each period, how many different assignments of courses to these class periods are possible for Mondays?
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1st period; 2nd period; 3rd period;....;5th period
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5 course choice for 1st
4 course choice for 2nd
3 course choice for 3rd
...
1 course choice for 5th
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Total number of choices: 5P5 = 5! = 120
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Cheers,
Stan H.</PRE>