Question

In a town of 10,000 families it was found that 40% families buy newspaper A, 20% families buy newspaper B and 10% families buy newspaper C, 5% families buy A & B, 3% buy B and C and 4% buy A and C. If 2% families buy all the three newspapers, then the number of families which buy A only is

(a)  3100

(b)  3300

(c)  2900

(d)  1400

Answer 1

Correct option (b) 3300

Explanation:

We have N=10000, n(A) = 40% of 10000 = 4000,