Answer
48
Work Step by Step
There are 4 digits and 3 letters. We multiply the number of options for any one of the three characters in the security code to find:
(1/4)(1/4)(1/3)
1/48
Thus, there are 48 different codes.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 13 - Probability - Mid-Chapter Quiz - Page 843: 19
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