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Social ScienceEach of the 10 questions on a multiple-choice exam has four possible answers. How many differentways are there for a student to answer the questions? Assume that every question must be answered.
Each of the 10 questions on a multiple-choice exam has four possible answers. How many different
ways are there for a student to answer the questions? Assume that every question must be answered.
Expert Answer
Multiplication rule for counting:
Consider the total number of events in a sequence is n.
The number of different possibilities for each event is k.
Therefore, the total number of possibilities of the sequence is kn.
Find the number of different ways for a student to answer the questions:
Let the total number of questions that have to be answered by student is n = 10.
Let the possible number of answers for each questi...
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