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Question

In a community of 175 persons, 40 read TOI, 50 read the Samachar Patrika and 100 do not read either. How many persons read both the papers?

A
16
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B
17
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C
15
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D
14
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Solution

The correct option is C 15
Number of people who read TOI n(TOI)=40
Number of people who read Samachar patrika, n(samachar patrika)=50
Number of people who do not read newspaper=100
Number of people who read newspaper (AB)=Total number of people - people who don't read newspaper
=175100=75
Number of persons who read both newspapers,
n(AB)=n(A)+n(B)n(AB)
n(AB)=40+5075
n(AB)=9075=15
Number of persons who read both newspapers=15

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