Context and question: Additionally, Somalia has several private television networks, including Horn Cable Television and Universal TV. Two such TV stations re-broadcast Al-Jazeera and CNN. Eastern Television Network and SBC TV air from Bosaso, the commercial capital of Puntland. The Puntland and Somaliland regions also each have one government-run TV channel, Puntland TV and Radio and Somaliland National TV, respectively.
What is the commercial capital of Somalilnand?
Answer: unanswerable
Context and question: The rulers of the expansionist Qin dynasty, based in present-day Gansu and Shaanxi, were only the first strategists to realize that the area's military importance matched its commercial and agricultural significance. The Sichuan basin is surrounded by the Himalayas to the west, the Qin Mountains to the north, and mountainous areas of Yunnan to the south. Since the Yangtze flows through the basin and then through the perilous Yangzi Gorges to eastern and southern China, Sichuan was a staging area for amphibious military forces and a refuge for political refugees.[citation needed]
Where was the Qin dynasty based?
Answer: present-day Gansu and Shaanxi
Context and question: Mathematics: From the earliest the Chinese used a positional decimal system on counting boards in order to calculate. To express 10, a single rod is placed in the second box from the right. The spoken language uses a similar system to English: e.g. four thousand two hundred seven. No symbol was used for zero. By the 1st century BC, negative numbers and decimal fractions were in use and The Nine Chapters on the Mathematical Art included methods for extracting higher order roots by Horner's method and solving linear equations and by Pythagoras' theorem. Cubic equations were solved in the Tang dynasty and solutions of equations of order higher than 3 appeared in print in 1245 AD by Ch'in Chiu-shao. Pascal's triangle for binomial coefficients was described around 1100 by Jia Xian.
What advanced mathematical methods did the Tang dynasty have?
Answer:
Cubic equations