In an examination, there are three subjects A, *B and C A student has to pass in each subject. 20% students failed in A, 22% students failed in B and 16% students failed, in C The total number of students % pksSing the whole examination lies between :

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Q: 90 (CAPF/2015)
In an examination, there are three subjects ‘A’, *B’ and ‘C A student has to pass in each subject. 20% students failed in ‘A’, 22% students failed in ‘B’ and 16% students failed, in ‘C The total number of students %» pksSing the whole examination lies between :

question_subject: 

Maths

question_exam: 

CAPF

stats: 

0,5,6,5,5,1,0

keywords: 

{'whole examination': [0, 0, 0, 1], 'examination': [0, 0, 1, 1], 'subjects': [5, 2, 6, 8], 'student': [0, 0, 2, 4], 'total number': [0, 0, 3, 0], 'subject': [2, 1, 6, 6]}

The correct answer is option 2: 42% and 78%.

To find the range of passing percentages for the whole examination, we need to consider the worst case scenario. This means assuming that all students who failed in each subject also failed in the other subjects.

Let`s consider the highest possible percentage of students who failed in each subject: 20% in subject A, 22% in subject B, and 16% in subject C.

In order for a student to pass the whole examination, they need to pass in each subject. Therefore, the passing percentage for the whole examination will be 100% - (20% + 22% + 16%) = 42%.

Now let`s consider the lowest possible percentage of students who failed in each subject: 0%. This means that all students passed in each subject.

In this case, the passing percentage for the whole examination will be 100%.

Therefore, the range of passing percentages for the whole examination lies between 42% and 100%, which is covered by option 2: 42% and 78%.

Hence, the correct answer is option 2.

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