Need math help with a problem about possible outcomes

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An opinion poll is to be conducted among cable TV viewers. Four multiple-choice questions, each with three possible answers, will be asked. In how many different ways can a viewer complete the poll if exactly one response is given to each question?
 A. 115 different ways B. 81 different ways C. 108 different ways D. 136 different ways E. 82 different ways F. 6 different ways
Nov 15th, 2015

This is a rule of product question . The correct answer is 81 different ways thus B is the correct answer . To state it simply if you have a ways to select something from a set , and b ways to select something from another set you have a * b ways for both . It applys for any given number of sets . In this case its 3 * 3 * 3 * 3 = 81

Nov 15th, 2015

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Nov 15th, 2015
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Nov 15th, 2015
Dec 4th, 2016
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