Answered

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in a survey, 80 people were were questioned to find out how how many people read newspapers, S or D or both both. The survey revealed ya that 45 read D, 30 read read S and 10 read neither


Represents the information in a venn diagram.​

Sagot :

tomson1975

Greetings from Brasil...

In this type of problem, we will use Set Theory

n(D ∪ S) = n(D) + n(S) - n(D ∩ S)
as n(U) - n(D ∪ S) = 10, then

n(D ∪ S) = 70, so

n(D ∩ S) = 5  (read both)

n(D) - n(D ∩ S) = 40  (read only D)

n(S) - n(D ∩ S) = 25 (read only S)

see attached figure

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something similar
https://brainly.com.br/tarefa/22716998

View image tomson1975
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