Question

Solve with the help of Venn diagram. Out of 48 persons in a certain building, 30 persons read newspaper
A, 20 person read newspaper B, 2 persons do not read any of the papers. Find the number of persons -
(1)
who read only newspaper A,
(2)
who red only newspaper B,
(3) who read both the newspaper A and B. (4) who read exactly one paper.​

Answer 1

Answer:

Step-by-step explanation:

Total number of people who read a and b altogether = 48-2 = 46

let us say the people who read both a and b = x

30 + 20 - x = 46

50 - x = 46

x = 50 - 46 = 4

1) # of people who read only a = 30 - 4 = 26

2)# of people who read only b = 20 - 4 = 16

3)# of people who read both a and b = 4

4)# of people who read exactly 1 paper =

# of people who read only a +  # of people who read only b

= 26 + 16 = 42