In a certain town, three newspapers are published. 20% read A, 16% percent read B, 14% read C. 8% read both A and B, 5% of the read both A and C, 4% read both B and C and 2% read all 3 newspapers.
What percentage of the population read
a) none of the papers b) at least one of the papers c)exactly one of the papers d) either A or B e) A only?
Please tell me the answers to these 5 questions and show me a method to do it