English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

In a colony, 275 families buy Tamil newspaper, 150 families buy English newspaper, 45 families buy Hindi newspaper, 125 families buy Tamil and English newspapers, 17 familie

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Question

In a colony, 275 families buy Tamil newspaper, 150 families buy English newspaper, 45 families buy Hindi newspaper, 125 families buy Tamil and English newspaper, 17 families buy English and Hindi newspapers, 5 families buy Tamil and Hindi newspaper and 3 families buy all the three newspaper. If each family buy atleast one of these newspaper then find Number of families buy only one newspaper

Diagram
Sum
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Solution

Let T, E and H represent families buying Tamil newspaper, English newspaper and Hindi newspaper respectively.

n(T) = 275, n(E) = 150, n(H) = 45

n(T ∩ E) = 125, n(E ∩ H) = 17, n(T ∩ H) = 5

n(T ∩ E ∩ H) = 3

Let us represent the given data in Venn diagrams.

Number of families buy only one newspaper

= 148 + 11 + 26

= 185

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Chapter 1: Set Language - Exercise 1.6 [Page 35]

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Samacheer Kalvi Mathematics [English] Class 9 TN Board
Chapter 1 Set Language
Exercise 1.6 | Q 9. (i) | Page 35

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