SOLUTION: an internet site requires a 8 character passwords, made up of 4 digits and 4 letters. it's required that the first number of the password be the number 9, without repetition of num

Algebra ->  Permutations -> SOLUTION: an internet site requires a 8 character passwords, made up of 4 digits and 4 letters. it's required that the first number of the password be the number 9, without repetition of num      Log On


   

Question 877952: an internet site requires a 8 character passwords, made up of 4 digits and 4 letters. it's required that the first number of the password be the number 9, without repetition of number or letters, how many different password can be made?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Since the first number is 9, only 9 digits are left to use.
N=1%2A9%2A8%2A7%2A26%2A25%2A24%2A23
N=180835200