Mathematics, 10.12.2021 01:10 Bowied6025
Quincy’s password to his online account is allowed to contain letters or digits. Quincy uses his
dog’s name, Buddy, as his password. The password is not case sensitive, meaning that
Buddy, buddy, and buDDy are equivalent.
(a) Quincy lets his friend know that his password is exactly 5 characters long and is
made up of letters only. What is the probability that Quincy’s friend can guess his password in one
try? Show your work.
(b) Quincy’s bank changes its webpage so that passwords are case-sensitive. This means that Buddy,
buddy, and buDDy are now considered three different passwords. Quincy tells his friend, “This makes
it twice as unlikely for you to guess my password.” Is Quincy’s statement correct? Explain.
(c) Quincy’s friend has a program that can test 100,000 passwords per second. Given what Quincy’s
friend knows about Quincy’s password, how long would it take him to test all the possibilities? How
much longer would it take Quincy’s friend to test all the possible passwords if he knew that Quincy’s
password was 5 characters long, but did not know whether those characters were letters or digits?
Show your work
Answers: 2
Mathematics, 21.06.2019 13:30
The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).
Answers: 1
Mathematics, 21.06.2019 18:00
Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2
Answers: 2
Mathematics, 21.06.2019 18:20
Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315
Answers: 1
Quincy’s password to his online account is allowed to contain letters or digits. Quincy uses his
d...
Chemistry, 03.03.2021 21:10
History, 03.03.2021 21:10
Mathematics, 03.03.2021 21:10
Mathematics, 03.03.2021 21:10
Physics, 03.03.2021 21:10
English, 03.03.2021 21:10
Mathematics, 03.03.2021 21:10
Mathematics, 03.03.2021 21:10