Math, asked by kishore7943, 5 months ago

A survey was conducted among 200 magazine subscribers of three different magazines A, B and C. It was found that 75 members do not subscribe magazine A, 100 members do not subscribe magazine B, 50 members do not subscribe magazine C and 125 subscribe atleast two of the three magazines. Find
(i) Number of members who subscribe exactly two magazines.
(ii) Number of members who subscribe only one magazine

Answers

Answered by ambikasanjayd
1

Step-by-step explanation:

Autobiography of a Mobile Phone – Short Essay

Category: Essays and Paragraphs

On January 12, 2019 By Ananda

I’m a mobile phone. I wrote my autobiography. I am one of the very delicate phones. Tring! Tring! Is my sound. You can hear me everywhere. Life is incomplete without me. Let’s takes you back to my life story. I hope you will enjoy it.

My Origin:

I’m a latest touch phone and was made by a famous company. I shone like a bright sun in the start.

Answered by anshikaawashti
5

Answer:

Total number of persons=100

Number of persons who read magazine A=n(A)=28

Number of persons who read magazine B=n(B)=30

Number of persons who read magazine C=n(C)=42

Number of people who read both magazine A and B = n(A∩B)=8

Number of people who read both magazine B and C= n(B∩C)=5

Number of people who read both magazine A and C = n(A∩B)=10

Number of people who read both magazine A, B and C = n(A∩B∩C)=3

Number of people who read none of the three magazines= n(A∪B∪C)=n(A)+n(B)+n(C)−n(A∩B)−n(B∩C)−n(C∩A)+n(A∩B∩C)

n(A∪B∪C)=28+30+42−8−5−10+3

Therefore total number of readers=80

Number of readers who read none of the three magazines= 100−80=20

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