Question

& Dinections: Information
gathered based on observations
of readers of these newspapers
A, 8 and 26% people
read
neauepaper A, 25% people read
newspaper B, 148 people read
newspaper C, 11 people nead
both newspapers A and B 10%.
people read both newspapers
B and C, at people nead both
A and C and 0% people
с.
0 What is the a
nesspaper
read only newspaper
of
ovenage
Readers of all newspapers?
What is the average of people
who nead both & and B newspaper
but not read
newspaper?
(2) What is the average number
of readers who stand at least
c
one newspaper?

​

Answer 1

Answer:

out of 100, 8 people don't read the news paper

So 100- 8 = 92 read the paper

Out of 92 , cardinal number of each set has been shown in the image

We can apply the formula directly

n(A U B U C) = n(A) + n(B)+ n(C)- {n(AUB)+ n(BUC)+ n(CUA) - n(A n B nC)}

=> 92 = 42+51+68 - {30+28+36 - K }

=> 92 = 161 - {94 - K }

=> 92 = 67 + K

=> K = 25

=> 25 read all three papers

Answer 2

Answer:

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