How many different 5 letter permutations can be formed from the letters in the word category
We have 8 possible letters, and we are forming (ordered) 5-letter sets. So the number of permutations is given by:
n!/(n-r)! with n=8 and r=5. This is for selecting permutations *without replacement*, i.e. we can only use each letter once in each word, aaaaa would not be allowed for example.
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?