SOLUTION: A person's phone requires a 5 digit password. How many passwords are possible if you can never have the same digit in back to back order?
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Question 955372: A person's phone requires a 5 digit password. How many passwords are possible if you can never have the same digit in back to back order? Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! So for the first digit, you have 10 choices.
The next digit, you only have 9 choices.
Similarly for the next 3 positions.