The number of cities with a population of 200,000 or more is 290 cities. 
From the histogram:
The cities with population of 200,000 or more are Cities C , D and E 
The number of cities in each are : 
- C = 150 cities 
- D = 80 cities 
- E = 60 cities 
Taking the sum : 
The number of cities with Population of 200,000 or more is 290.