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Mathematics
OpenStudy (anonymous):

You need to arrange 7 of your favorite books along a small shelf. How many different ways can your arrange the books? Assuming that the order of the books makes a difference to you.

jimthompson5910 (jim_thompson5910):

You have 7 books for the first slot, 6 for the second, 5 for the third, etc etc until you get down to 1 for the last slot. Multiply all these choices together to get your final answer.

jimthompson5910 (jim_thompson5910):

This is the same as 7 factorial (7!)

OpenStudy (anonymous):

Thanks

jimthompson5910 (jim_thompson5910):

yw

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