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A student appears in an objective test ...

A student appears in an objective test which contain 5 multiple choice questions. Each question has 4 choices out of which one correct answer.
(i) What is the maximum number of different answers can the students give ?
(ii) How will the answer change if each question may have more than one correct answers ?

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The correct Answer is:
`15^(5)`
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PREMIERS PUBLISHERS-COMBINATORICS AND MATHEMATICAL INDUCTION-EXERCISE 4.2
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