For a set of five true or false questions, no student has written the all correct answers and no two students have given the same sequence of answers. The maximum number of students in the class for this to be possible is

Question

Quantrex Academy · Accepted Answer

Correct answer: B. 31

Each of the five questions can be solved in two ways. Maximum number of wrong answers. =(2 2 2 2 2)-1=31

For a set of five true or false questions, no student has written the all correct answers and no two students have given the same sequence of answers. The maximum number of students in the class for this to be possible is

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Correct answer

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