question - 5 -
Answer-
so here there are ten numbers from 0-9
and fivenumber password
so tatal ways = 10c1*10C1*10C1*10C1*10C1
=10*10*10*10*10 =10^5
=100,000
QUESTION 8 A password consists of 5 digits of 0 to 9. In the worst case,...
QUESTION 6 A password consists of 5 alphabet letters, case insensitive. In the worst case, how many combinations does a hacker must try in order to break the password using brutal force? Write your answer in exact integer.
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?
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