Question

3. (20 points) A computer password consists of: - letters {a, A, b, B, ..., z, Z}, - digits {0, 1, ..., 9}, or - special characters {!, @, #, $, %}. In addition, a password must - contain at least one upper case letter. - contain at least one special character. How many passwords of length 8 are possible?

          3. (20 points) A computer password consists of:

- letters {a, A, b, B, ..., z, Z},
- digits {0, 1, ..., 9}, or
- special characters {!, @, #, $, %}.

In addition, a password must

- contain at least one upper case letter.
- contain at least one special character.

How many passwords of length 8 are possible?

3. (20 points) A computer password consists of:

- letters a, A, b, B, ..., z, Z,
- digits 0, 1, ..., 9, or
- special characters !, @, #, , %}.

In addition, a password must

- contain at least one upper case letter.
- contain at least one special character.

How many passwords of length 8 are possible?

Added by Mary A.

Calculus: Early Transcendentals

James Stewart 8th Edition

Instant Answer

Solved by Expert Sri K

03/15/2023

Step 1

There are 26 letters (both upper and lower case), 10 digits, and 5 special characters, making a total of 41 possible characters for each position in the password. Since the password has 8 positions, there are $41^8$ possible passwords without any Show more…

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3. (20 points) A computer password consists of: - letters {a, A, b, B, ..., z, Z}, - digits {0, 1, ..., 9}, or - special characters {!, @, #, $, %}. In addition, a password must - contain at least one upper case letter. - contain at least one special character. How many passwords of length 8 are possible?