TASK DEFINITION: This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning). 
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.
PROBLEM: Passage: However, this was due to the influx of approximately 200,000 Crimean Tatars &ndash; a number equivalent to approximately 10% of Crimeas 1989 population – who arrived in Crimea after 1989 and whose population in that region increased by a factor of 6.4 from 38,000 to 243,400 between 1989 and 2001. Collectively, the net population loss in the regions of Ukraine outside the westernmost regions was 2,759,200 people or 6.6% of the 1989 population. The total population of these regions in 2001 was 39,186,100.

SOLUTION: How many Crimean Tatars did the population increase by between 1989 and 2001?

PROBLEM: Passage: In the first period, before 1648, we are dealing mostly with raids and defensive measures. Before 1507 raids were into the Polish Ukraine extending as far as Belarus. After 1507 raiding into the Ukraine continued but most raids were in the region south of Moscow. There was a tendency for population, fortifications and raiding to shift south from Moscow and east from the Polish/Ukrainian area. After 1648 we are dealing with large armies - Tatars, Turks, Poles, Russians and large numbers of Ukrainian Cossacks. Most fighting was in the western Ukraine . This drove the Slavic population to the Left Bank and probably allowed Russian population to expand southward north of Ukraine. Fighting weakened the Polish Commonwealth, but Russia continued to grow southward until it annexed Crimea in 1783. Note that this list does not include raids before 1480, raids further east, most Cossack raids on Crimea and petty raiding between different groups of Nogais, which was considerable. The main underlying theme of the period is the southward expansion of Russian population and the eastward expansion of Ukrainian population. If we had population figures for this the history of the period would be much clearer.

SOLUTION: How many years after raids were well into the Polish Ukraine as far as Belarus did Russia annex Crimea?

PROBLEM: Passage: At the 2011 census, there were 1,729,040 people with 906,782 households living in Budapest. Some 1.6 million persons from the metropolitan area may be within Budapests boundaries during work hours, and during special events. This fluctuation of people is caused by hundreds of thousands of suburban residents who travel to the city for work, education, health care, and special events. By ethnicity there were 1,397,851 (80.8%) Hungarians, 19,530 (1.1%) Romani people, 18,278 (1.0%) Germans, 6,189 (0.4%) Romanians, 4,692 (0.3%) Han Chinese and 2,581 (0.1%) Slovaks. 301,943 people (17.5%) did not declare their ethnicity. In Hungary people can declare more than one ethnicity, so the sum of ethnicities is higher than the total population. The city is home to one of the largest Jewish communities in Europe.

SOLUTION:
How many  more percent were Hungarians than Germans at the 2011 census?