MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Question
A lock on a bank vault consists of three dials, each with
30
positions. In order for the vault to open, each of the three dials must be in the correct position.
a.
|
How many different possible dial combinations are there for this lock?
|
b.
|
What is the probability that if you randomly select a position on each dial, you will be able to open the bank vault?
|
c.
|
Explain why "dial combinations" are not mathematical combinations expressed by the equation
nCx=n!x!(n−x)!.
|
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