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

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.
.
Ed
RELATED QUESTIONS
On a certain computer network each user has to have a password consisting of six to... (answered by Edwin McCravy)

A certain website allows for eight characters for its password. The first character has... (answered by math_helper)

how many computer password are possible, using digits: 0-9, a-z(lower case), A-Z (upper... (answered by swincher4391)

To keep computer files secure, many programs require the user to enter a password. The... (answered by sudhanshu_kmr)

please help me solve this problem. a computer password made up of four characters. Each... (answered by Fombitz)

To keep computer files secure, many programs require the user to enter a password. The... (answered by Boreal)

a Particular company,any valid password consists of 8 characters in any order ass follow (answered by richwmiller)

a Particular company,any valid password consists of 8 characters in any order as follow... (answered by richwmiller)

Please Help me solve this question: A particular website requires that users select a... (answered by Fombitz)