Allowing digits and special characters (as well as case-sensitive letters) creates an enormous number of passwords.  However, computers can check passwords very quickly.  Assume a computer can check approximately 170 million passwords per second.  (Note that this is an approximate value, so it is a mistake to give answers with several decimal places that are not significant). a) How long (in minutes) would it take a computer to check every possible 5 character

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
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Allowing digits and special characters (as well as case-sensitive letters) creates an enormous number of passwords.  However, computers can check passwords very quickly.  Assume a computer can check approximately 170 million passwords per second.  (Note that this is an approximate value, so it is a mistake to give answers with several decimal places that are not significant).

  1. a) How long (in minutes) would it take a computer to check every possible 5 character password? 
  2. b) How long (in years) would it take a computer to check every possible 9 character password? 
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