Find the following factorial: 1!
Find the following factorial: 5!
Find the following factorial: 8!
How many ways are there to order 6 books on a shelf?
6! = 720
Simplify the factorial expression:
How many permutations are there with 4 objects and 2 places?
How many permutations are there with 6 objects and 2 places?
How many permutations are there with 5 objects and 3 places?
Find the number of permutations:
How many possible combinations are there on a 3-digit combination lock (each digit ranging from 0 to 9)? It's okay, you can tell us...we're not trying to break into your locker.
103 = 1000
With repetition allowed, how many ways can one choose 6 out of 9 things?
96 = 531,441
How many possible 7-digit telephone numbers are there? Someone left their umbrella on the subway and we need to track them down.
Make it rain.