If a rank-size pattern holds and the largest city has six million people, about how large should the third city be?
Q1. If a rank-size pattern holds and the largest city has six million people, about how large should the third city be?
Answer: Two million people
Explanation: The rank-size rule states that the nth-largest city has 1/n the population of the largest city; the third city would therefore have one-third of six million, equaling two million people.