Answer :
The number of different ways a viewer can complete the poll if exactly one response is given to each question is 243.
This is a question of permutations and combinations.
It is given in the question that an opinion poll is to be conducted among cable tv viewers. There are five multiple-choice questions, each with three possible answers.
We have to find the number of different ways a viewer can complete the poll if exactly one response is given to each question.
A viewer can do a question with three possible answer in 3 ways, by choosing any one of them.
Hence,
Number of different ways a viewer can complete the poll with 5 questions if exactly one response is given to each question = 3*3*3*3*3 = 243.
To learn more about permutations, here:-
https://brainly.com/question/1216161
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