Question
Of the students who failed in Signals, how many failed in exactly 2 papers?
Answer: Option A
:
A
option (a)From (1), we know that 180 students failed in all five subjects. So if we take the second row from the top then in all the papers the absolute number is 180, the % value can change depending upon the number of students who failed in that paper. So in Signal, total number of students = 900. Number of students who failed in exactly 5 = 180. So % = (180/900)* 100 = 20%. So, left percentage = 100 – (20 + 20 + 10 + 30) = 20%. Hence, the number of students who failed in exactly 2 = 20% of 900 = 180.
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:
A
option (a)From (1), we know that 180 students failed in all five subjects. So if we take the second row from the top then in all the papers the absolute number is 180, the % value can change depending upon the number of students who failed in that paper. So in Signal, total number of students = 900. Number of students who failed in exactly 5 = 180. So % = (180/900)* 100 = 20%. So, left percentage = 100 – (20 + 20 + 10 + 30) = 20%. Hence, the number of students who failed in exactly 2 = 20% of 900 = 180.
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