A password to a computer consists of 6 characters: a digit, a letter, a digit, a...
A computer password is required to be 9 characters long. How many passwords are possible if the password requires 2 letter(s) followed by 7 digits (numbers 0-9), where no repetition of any letter or digit is allowed? There are _________ possible passswords.
A password consists of one letter followed by a five-digit number. A) How many passwords are possible if none of the letters or digits can be repeated? B) What is the probability of guessing the password in one trial if there are no restrictions? (To find the probability use the definition of classical probability.)
4: A certain computer program is accessed by entering a user-defined password. If the password a. can contain any lowercase letter, uppercase letter, or digit from 0-9, and must contain 10 characters, how many possible passwords are there if no character can be used more than once? Express your answer as a factorial statement. Is 8 an example of permutations or combinations? b. 4: A certain computer program is accessed by entering a user-defined password. If the password a. can...
A password must be 6 characters long. Assume the first 4 characters are a word out of a list of 13,000 words, the next 2 chars are digits(0-9) OR a special character from a list of 25. How many passwords are possible?
A password consists of three letters followed by a two-digit number. (a) How many passwords are possible if there are no restrictions? 1757600 (b) How many passwords are possible if none of the letters or digits can be repeated? (c) What is the probability of guessing the password in one trial if there are no restrictions? O A. 0.0000007123 O B. 0.0000005690 O C. 0.2 O D. 0.798816568
A password consists of 4 letters among 26 lower-case English alphabet letters and 10 digits: 0,1,...,9. (i) How many different passwords that contain at least one digit can be formed? (ii) How many different passwords that contain at least one digit and at least one letter can be formed?
Question 3: a. A computer password is 6 characters long. A character can be either a digit or an uppercase English letter. A valid password must contain exactly one digit. How many valid passwords are there? (hint: you do not know the position of this one digit. It might be in the beginning or the end or the middle of the password. You may use the combination low to select the position of this digit and then assigno value to...
Assume an 8-letter password from the 95 printable ASCII characters is used in a computer system. If passwords are chosen by the users, what is the total password population? What is the probability of an adversary guessing a password correctly?
In a password, there are 6 characters. The characters can be any 10 digits or 26 lowercase letters. Repetition is allowed, order does not matter. Calculate the probability that the first character is a digit
If a password can be chosen from 64 possible characters and the password can be anywhere between 6 and 8 characters inclusively, how many different passwords are possible? 646 + 647 + 648 6 x 64 x 7 x 64 x 8 x 64 None of these answers 646 x 647 x 648