SOLUTION: A password consists of 4 letters followed by a 3 digit number: how many passwords are available if there are no restrictions and how many passwords are available if none of the let

Algebra ->  Permutations -> SOLUTION: A password consists of 4 letters followed by a 3 digit number: how many passwords are available if there are no restrictions and how many passwords are available if none of the let      Log On


   

Question 463298: A password consists of 4 letters followed by a 3 digit number: how many passwords are available if there are no restrictions and how many passwords are available if none of the letters or digits can be repeated?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
No restrictions:26^4*10^3=456976000
.
Nothing repeated:26*25*24*23*10*9*8=258336000
.
Ed