In an examination, 25% of total students failed in Hindi, 48% failed in English and 27% in both. The percentage of these who passed in both the subjects is :
Select:
A) 23  B) 54  C) 28  D) 40  E) 81
Explanation:   Formula n(aâˆªb) = n(a) + n(b) âˆ’ n(aâˆ©b)   Fail in Hindi or English = 25 + 48 â€“ 27 = 46   Therefore students who passed = 100 â€“ 46 = 54.   Answer: 54
<result>B</result>
In an examination, 25% of total students failed in Hindi, 48% failed in English and 27% in both. The percentage of these who passed in both the subjects is :