Quoc: Mentioned five countries of so called "Central Asia" region are situated far from the geographical midpoint of Asia in Russian Southern Siberia, the largest country of the "Central Asia" region-Kazakhstan-is partially out of Asia in Europe. Central Asia has a population of about 70 million, consisting of five republics: Kazakhstan (pop. 18 million), Kyrgyzstan (6 million), Tajikistan (9 million), Turkmenistan (6 million), and Uzbekistan (31 million). Afghanistan (pop. 35 million), which is a part of South Asia, is also sometimes included in Central Asia, as is Mongolia (pop. 3 million), which is part of East Asia.

Answer this question based on the passage: how many countries are there in central asia?
HW Chung: OK, some thoughts:
To answer the above question, the relevant sentence is: Central Asia has a population of about 70 million, consisting of five republics: Kazakhstan ( pop. The answer is five.