Set and statistic

Question

In a survey of 160 people,it was found that 80 read punch,35 read both punch and Tribune,60 read Tribune, 40 read both punch and vanguard, 57 read vanguard, 30 read both Tribune and vanguard and 21 read all three newspaper

A.find the number of people who read at least one of the three newspaper

B. Find the number of people who read exactly one newspaper

Answer 1

(A) Number of people who read at least one of the three newspaper = 80 + 18 + 9 + 16 = 123

(B) Number of people who read exactly one newspaper = 26 + 18 + 16 = 60