Latest TCS Aptitude Question SOLUTION: for a set of 5 true or false questions,no student has written all the correct answers and no two students have given the same sequences of answers.what is the maximum number of stu

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for a set of 5 true or false questions,no student has written all the correct answers and no two students have given the same sequences of answers.what is the maximum number of students in the classes for this to be possible?

Asked In TCS charan (11 years ago)

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Dinesh Gundapaneni  (11 years ago)

number of ways to arrange T or F for five questions is 2^5=32
no student gave correct answer.. so 32-1= 31.
hence max students are 31 :)

Is this solution Helpfull? Yes (41) | No (2)  

JESY  (11 years ago)

5 questions can be T or F.. ie 5 questions,each can either of 2 values ..so 2^5=32..

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S.Mohan Shankar  (8 years ago)

Reading this the first thing, which is obvious, that there is only one possible sequence, which none of the children answered. Now if we find the no. of possible sequences, subtract one from it, we will get our answer.
total possible sequences= 2^5=32
correct answer sequence=1
wrong answer sequences=32-1=31

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