Atacertaincompany,passwordsmustbefrom35symbols long and
Chapter 9, Problem 9.92(choose chapter or problem)
Atacertaincompany,passwordsmustbefrom35symbols long and composed of the 26 letters of the alphabet, the ten digits 09, and the 14 symbols !,@,#,$,%,,&, ,(,),,+,{, and }. a. How many passwords are possible if repetition of symbols is allowed? b. How many passwords contain no repeated symbols? c. Howmanypasswordshaveatleastonerepeatedsymbol?d. What is the probability that a password chosen at random has at least one repeated symbol?
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