Jessie is creating a 10-character password that consists of numbers and letters (Each digit will be considered a character). He is not allowed to have repeated characters, but lower case letters and upper-case letters are allowed (ex. “a” and “A” will be considered different characters). a. How many different passwords can he create if “a” and “A” must be a part of the password. b. How many different passwords can he create if there must be at least 8 digits in the password?
Jessie is creating a 10-character password that consists of numbers and letters (Each digit will be considered a character). He is not allowed to have repeated characters, but lower case letters and upper-case letters are allowed (ex. “a” and “A” will be considered different characters). a. How many different passwords can he create if “a” and “A” must be a part of the password. b. How many different passwords can he create if there must be at least 8 digits in the password?
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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Jessie is creating a 10-character password that consists of
numbers and letters (Each digit will be considered a character). He is
not allowed to have repeated characters, but lower case letters and
upper-case letters are allowed (ex. “a” and “A” will be considered
different characters).
a. How many different passwords can he create if “a” and “A” must
be a part of the password.
b. How many different passwords can he create if there must be
at least 8 digits in the password?
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