In A Certain City, Five Percent Of All The People In Town Have Unlisted Phone Numbers
Riddle: In a certain city, 5% of all the people in town have unlisted phone numbers. If you select 100 names at random from that city's phone directory, how many people selected will have unlisted phone numbers?
Answer: None. If their names are in the phone directory, they do not have unlisted phone numbers!
Source: https://www.riddles.com/index.php/200
