Question
In: Statistics and Probability
A private television decides to opt for the system of ”pay-program” using the decoders ordered by...
A private television decides to opt for the system of ”pay-program” using the decoders ordered by 8-digit codes.
a)Find the number of potential subscribers and the number of subscribers with code consisting of 8 different digits.
b)Calculate the number of codes with 2 different digits; one used 1 time and the other 7 times.
c)Same question with 3 different digits, 2 of them used 1 time and the 3rd used 6 times.
Solutions
Expert Solution
Therefore
Total number of potential subscribers = 16777216
Total number of subscribers with code consisting of 8 different digits = 40320
number of codes with 2 different digits; one used 1 time and the other 7 times. = 45*8 = 360 ways
number of codes with3 different digits, 2 of them used 1 time and the 3rd used 6 times. = 120*56 = 6720.
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