× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
tonyekwelu tonyekwelu
wrote...
solved
Posts: 8
Rep: 0 0
10 years ago
If four students enter a classroom that has 10 vacant seats, in how many ways can they be seated?

Which of the following formulas do I use.  
Factorial
Permutation of n objects take r at a time nPr= n!/(n-r)!
Combination of n objects taken r at a time nCr = n!/r!(n-r)!

Please help.  Slight Smile

If I choose nPr = 5040 different ways.  That seems so much is it correct?
Read 2119 times
1 Reply

Related Topics

Replies
wrote...
#1
10 years ago
Your answer is correct.  It's a permutation question, because a different ordering of people in the same four seats counts as a different arrangement.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1241 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 255
  
 1071
  
 66
Your Opinion
Previous poll results: Who will win the 2024 president election?