db3c762b-a7a4-4098-b551-33de9e349370
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SOLVED: Exercise 10.1.2: Counting passwords made up of letters, digits, and special charactersAboutConsider the following definitions for sets of characters:Digits 0,1,2,3,4,5,6,7,8,9Letters a,b,c,d,e,f,g,h,i,j,k,m,n,o,p,q,r,s,t,u,v,w,x,y,zSpecial characters = , , #Compute the number of passwords that satisfy the given constraints:1. Strings of length 6. Characters can be special characters, digits, or letters.2. Strings of length 7, 8, or 9. Characters can be special characters, digits, or l
SOLVED: Exercise 10.1.2: Counting passwords made up of letters, digi…
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A computer system uses passwords that are exactly seven characters, and each character is one of the 26 letters (a-z) or 10 integers (0-9). Uppercase letters are not used. a. How many passwords are possible? b. If a password consists of exactly 6 letters and 1 number, how many passwords are possible? c. If a password consists of 5 letters followed by 2 numbers, how many passwords are possible? | Numerade
A computer system uses passwords that are exactly seven characters, …
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A computer system uses passwords that are exactly six characters and each character is one of the 26 letters (a-z) or 10 integers (0-9). Suppose there are 10,000 users of the system with unique passwords. A hacker randomly selects (with replacement) one billion passwords from the potential set, and a match to a user's password is called a hit. (a) What is the distribution of the number of hits? (b) What is the probability of no hits? (c) What are the mean and variance of the number of hits? | Nu
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