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Previous Year Question (PYQs)

In a class of 50 students, it was found that 30 students read "Hitava", 35 students read "Hindustan" and 10 read neither. How many students read both: "Hitavad" and "Hindustan" newspapers?




Solution

P(x)=50,
P(A ∩ B)' = 10 
So P(A ∪ B) = 50 - 10 = 40. 
So P(A ∩ B) = P(A) + P(B) - P(A ∪ B) 
= 30 + 35 - 40 = 25

Solution Contribution by Priyanka Soni

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