<PRE><B>Question 415616</B>
how many permutations can be made from selecting 4 college courses out of 10 
10P4 = 10*9*8*7 = 5040
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four students can choose to write on one of 5 essay topics for their english class. how many different essays can the students write without repetition of the topics?
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Ans: 5*4*3*2 = 120
The assumption here is that order makes a difference.

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how many different essays can the students write with repetition of the topics?
5^4  = 625
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Cheers,
Stan H.
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