SOLUTION: a Particular company,any valid password consists of 8 characters in any order as follow
4 distinct lower case letter,
two distinct digits and
any two (distinct) of the special c
Algebra ->
Permutations
-> SOLUTION: a Particular company,any valid password consists of 8 characters in any order as follow
4 distinct lower case letter,
two distinct digits and
any two (distinct) of the special c
Log On
Question 1146146: a Particular company,any valid password consists of 8 characters in any order as follow
4 distinct lower case letter,
two distinct digits and
any two (distinct) of the special characters
~ ! @ - # $ ; % ^ & * ? : < \ [ { ] } + = _ >
How many valid passwords are there if no repeats are allowed (that is, each character can only be used at most once)?
You can put this solution on YOUR website! 26 lower case letters 4
10 distinct digits 2
23 special characters 2
26*25*24*23*10*9*23*22=16,339,752,000
(American style) 16 billion 339 million 752 thousand
