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A test has four questions. Each of the question has three choices. In how many ways can the test be attempted such that each question has to be attempted?

A test has four questions. Each of the question has three choices. In how many ways can the test be attempted such that each question has to be attempted? Correct Answer 81

Given:

A test has four questions. Each of the question has three choices.

Formula:

If a question has n choices and it is compulsory to attempt it, with m question then it can be answered in (n)m ways.

Calculation:

Since each question has three choices, there are three possibilities of answering one question so paper can be attempted in (3)4 ways = 81

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