SOLUTION: each user on a computer system has a password which can be 5 to 7 characters long, where each character is a lower case letter, an uppercase letter or a digit. Each password must c
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Question 463977: each user on a computer system has a password which can be 5 to 7 characters long, where each character is a lower case letter, an uppercase letter or a digit. Each password must contain at lease one digit. How many distinct passwords are possible Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! 26*2+10=62 possible characters.
Digitless:52P6+52P7+52P5
With digits: 62P5+62P6+62P7
(62P5+62P6+62P7)-(52P6+52P7+52P5)=1834446588000 distinct passwords are possible containing at least one digit.
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Ed
