Question

using a rank size rule equation, if the population of the 4th largest city in country a is 8 million, what is the population of the largest city in that country? 16 million 24 million 32 million 64 million

1. The city at 1st position with the largest population, have a population of 64 million.
Given, the population of the 4th largest city in country a is 8 million.
we have to find the population of the largest city in that country and
we have options : 16 million, 24 million, 32 million and 64 million
As, the given city with 8 million population is at 4th position in the country.
then, the city at 3rd position will be having a population of 2×8 million i.e. 16 million
similarly, the city at 2nd position will be having a population of 2×16 million i.e. 32 million
and the city at 1st position will be having a population of 2×32 million i.e. 64 million.
So, the city at 1st position have a population of 64 million.
Hence, the city at 1st position have a population of 64 million.