7. We consider case-sensitive alphanumeric passwords (there are 62 possible characters). (a) How many passwords with length 10 are there? (b) How many passwords of length 10 contain your (7 character) user name? Be sure to explain your answer. (c) How many passwords have length 8, 9, or 10 and do not contain your user name?
7. We consider case-sensitive alphanumeric passwords (there are 62 possible characters). (a) How many passwords with length 10 are there? (b) How many passwords of length 10 contain your (7 character) user name? Be sure to explain your answer. (c) How many passwords have length 8, 9, or 10 and do not contain your user name?
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter2: Working With Real Numbers
Section2.3: Rules For Addition
Problem 7P
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