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A computer password consists of eight characters.a. How
Chapter 2, Problem 9E(choose chapter or problem)
A computer password consists of eight characters.
a. How many different passwords are possible if each character may be any lowercase letter or
digit?
b. How many different passwords are possible if each character may be any lowercase letter or digit, and at least one character must be a digit?
c. A computer system requires that passwords contain at least one digit. If eight characters are generated at random, and each is equally likely to be any of the 26 letters or 10 digits, what is the probability that a valid password will be generated?
Questions & Answers
QUESTION:
A computer password consists of eight characters.
a. How many different passwords are possible if each character may be any lowercase letter or
digit?
b. How many different passwords are possible if each character may be any lowercase letter or digit, and at least one character must be a digit?
c. A computer system requires that passwords contain at least one digit. If eight characters are generated at random, and each is equally likely to be any of the 26 letters or 10 digits, what is the probability that a valid password will be generated?
ANSWER:
Answer :
Step 1 of 3 :
Given,
The computer consists of 8 character password.
- The claim is to find how many passwords are possible if each character may be any lowercase letter or digit
A computer keyboard contains 26 letters and 10 digits
Totally 36 characters
The size of the password be 8 characters
Therefore = 2.8211
There are 2.8211 passwords are possible if each character may be any lowercase letter or digit.