0:00:00.310,0:00:04.040 So here's one way to solve the quiz; we're going to create a dictionary 0:00:04.040,0:00:09.520 called Population, and then we'll add some cities to it. We'll add Shanghai, 0:00:09.520,0:00:14.345 has population 17.8 million. Istanbul has population 0:00:14.345,0:00:19.870 13.3 million. Karachi has population 13 million, and 0:00:19.870,0:00:24.900 Mumbai has population 12.5. I'm also going to add my home town, 0:00:26.030,0:00:31.160 which is Charlottesville, and the population of Charlottesville is pretty small 0:00:31.160,0:00:39.540 compared to Shanghai. It is 0.043 million people. Only 43,000. So now we've 0:00:39.540,0:00:44.470 created our dictionary. We've populated it with some entries. We can print those 0:00:44.470,0:00:50.444 out. So if we look at the value of population of Shanghai, 0:00:50.444,0:00:54.860 that will get that entry in the dictionary, and we can see that we get the 0:00:54.860,0:00:57.460 result 17.8; we can also print out the 0:00:57.460,0:01:03.105 population of Charlottesville, and we get the result 0.043