SOLVED: A five-character password is to be formed from only the characters A, B, C, D, 1, 2, 3, 4, 5. The password must have no repeated characters. How many passwords are possible if the password:a) can consist of any 5 of these 9 characters in any order? (e.g: 5ACD1)b) must consist of 2 letters followed by 3 numbers? (e.g: CA213)c) must consist of 2 letters and 3 numbers in any order? (e.g: 32AC5)

Your Long Password Is Still Easy to Crack

Set the minimum number of characters in the password [Cisco] | N-Study