Question

Among 1000 families of a city, 40% read newspaper
A, 20% read newspaper B, 10% read newspaper C, 5%
read both A and B, 3% read both B and C, 4% read A
and C and 2% read all three newspapers. The number
of families which read only newspaper A is
(A) 140
(B) 290
(C) 330
(D) 340​

Answer 1

Answer:

(B) 290 ia answer

Step-by-step explanation:

total 40 read newspaperA

out of which

5% A&B both

4% A&c both

2% all

so onlyA will be 40-5-4-2

=29

1000× 29 %

=290