Question 841691: A certain model of remote-control garage door opener has nine binary (off/on) switches. The homeowner can set any code sequence. How many separate codes can be programmed? If you try to use your door opener on 1,000 other garages, how many times would you expect to succeed? (Round your answer to nearest integer.)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A certain model of remote-control garage door opener has nine binary (off/on) switches. The homeowner can set any code sequence.
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How many separate codes can be programmed?
Ans: 2^9 = 512
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If you try to use your door opener on 1,000 other garages, how many times would you expect to succeed? (Round your answer to nearest integer.)
Ans: 1000(1/512) is approximately 2
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Cheers,
Stan H.
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