Concept explainers
(a)
To calculate how many four letter call signs start with the letter W.
(a)
Answer to Problem 8.40E
Explanation of Solution
Use the multiplication principle and that there are
(b)
To calculate how many four letter call signs start with the letter W are possible with the restrictions given.
(b)
Answer to Problem 8.40E
There are
Explanation of Solution
Determine the number of signs from (a) that have three repeating letters using multiplication counting principle:
Not the first letter:
First letter:
Thus in total there are
Thus there are
(c)
To calculate how many four letter call signs start with the letter W or K and meet the restrictions in (b).
(c)
Answer to Problem 8.40E
There are
Explanation of Solution
Use the multiplication principle and that there are
Determine the number of signs from (a) that have three repeating letters using multiplication counting principle:
Not the first letter:
First letter:
Thus in total there are
Thus there are
Chapter 8 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
Essentials of Statistics, Books a la Carte Edition (5th Edition)
Introductory Statistics (10th Edition)
Statistics for Psychology
Statistics for Business and Economics (13th Edition)
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