Q. 9 A4.9( 9 Votes )

In a survey of 60

Answer :

Total number of People n(P) = 60.


n(H) =25.


n(T) = 26.


n(I) = 26.


n (H I) = 9


n (H T) = 11


n (T I) = 8


n (H T I) = 3


The people who read at least one newspaper would be n(H or I or T) = n(HIT)


We know,


n(HIT) = n(H)+n(I)+n(T) – n (H I)– n (H T)– n (T I)+ n (H T I)


n(HIT) = 25+26+26–9–11–8+3


n(HIT) = 52.


There are 52 people who read at least one newspaper.


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