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A password for the computer is a string of digits 0, 1, 2, 3, 4, 5, 6,7,8,9 and/or letters a,b.c....x.y,z (there are 26 different
A password for the computer is a string of digits 0, 1, 2, 3, 4, 5, 6,7,8,9 and/or letters a,b.c....x.y,z (there are 26 different letters). The password must obey the following rules: (a) the length of the password must be exactly 8 characters; (b) the password must contain at least one digit, and no more than three digits. What is the number of different passwords you can form?
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Elementary Statistics
Authors: Mario F. Triola
12th Edition
0321836960, 978-0321836960
