a. if the characters should not repeat? b. if the characters repeat? c. if the first 3 characters are numbers and the last 3 characters are letters, which are all distinct?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A social media account requires a 6-character password. Passwords should only contain numbers from 1 to
9 and capital letters A to E. How many different passwords can you generate
a. if the characters should not repeat?
b. if the characters repeat?
c. if the first 3 characters are numbers and the last 3 characters are letters, which are all distinct?

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