Latest TCS Aptitude Question SOLUTION: A mcq question has 4 options.choosing correct option earns the student 3marks and the wrong answer incurs negetive marks so if a student choose an option randomly his expected scor

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(#M40003438) TCS question Keep an EYE

A mcq question has 4 options.choosing correct option earns the student 3marks and the wrong answer incurs negetive marks so if a student choose an option randomly his expected score is zero.suppose a student has successfully eliminated two incorrect option.his expected score if he chooses randomly among the remaining option

Asked In TCS Shruti Ghosh (12 years ago)

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sandeep de  (12 years ago)

It will be 1 as total probablity is 0 suposse a negetive marks gives x marks
therefore total probablity =>3*1/4+(x*1/4)+(x*1/4)+(x*1/4)=0
therefore x=-1
it indicates a negetive answer gives -1 marks
now after eliminating 2 -ve ans the probablity is
=>3*1/2+(-1*1/2)
= 1

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