MHT CET · Maths · Permutation Combination
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
- A 30
- B 31
- C 32
- D 16
Answer & Solution
Correct Answer
(B) 31
Step-by-step Solution
Detailed explanation
Each of the five questions can be solved in two ways.
\(\therefore\) Maximum number of wrong answers.
\(=(2 \times 2 \times 2 \times 2 \times 2)-1=31\)
\(\therefore\) Maximum number of wrong answers.
\(=(2 \times 2 \times 2 \times 2 \times 2)-1=31\)
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