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.

[Q]: Passage: As of the census of 2000, there were 74,563 people, 25,447 households, and 20,154 families residing in the county. The population density was 346 people per square mile (134/km). There were 27,576 housing units at an average density of 128 per square mile (49/km). The racial makeup of the county was 83.93% Race (United States Census), 13.11% Race (United States Census) or Race (United States Census), 0.30% Race (United States Census), 0.88% Race (United States Census), 0.03% Race (United States Census), 0.49% from Race (United States Census), and 1.27% from two or more races. 1.52% of the population were Race (United States Census) or Race (United States Census) of any race. 15.5% were of irish people, 15.0% german people, 12.0% english people, 11.5% United States or American and 7.1% italian people ancestry.
[A]: How many ancestry groups each made up more than 10% of the population but no more than 15%?

[Q]: Passage: On December 1 the 3rd Army Group guerrillas cut the Lung-hai Railway near Luowang, Neihuanggi, and east and west of Lankao. They also cut the highways at Tung-hsu , Huaiyang and Luyi. Meanwhile, the 81st Division's main force attacked Kaifeng while some of its elements attacked Lanfeng. Lowang Railway station was taken on December 15 and the Division entered Kaifeng the next day, clearing the Japanese troops and burning warehouses and a Japanese headquarters there. Meanwhile, to the southeast 2nd Cavalry Corps moved east of Boxian, encircled and attacked Shangqiu from the east and overran an airfield and burned aviation fuel there. Another force intercepted and defeated relief forces moving west from Dangshan on the Lung-hai Railway. North of the Yellow River the 36th Army Group attacked. Its new 5th Corps on December 6 attacked elements of the Japanese 1st Independent Mixed Brigade north and south of Anyang and succeeded in destroying bridges along the roads at Chi, Chun, Tang-yin and Pao-lien Temple Station. On December 13 the 47th Corps cleared Taihang Mountain and cut the Tao-tsin Railroad, taking the rail stations at Po-shan and Chang-kou. The 9th Corps attacked elements of the Japanese 35th Division between Bo'ai and Jixian, cutting communications between them and attacking the defenders on the outskirts of Jixian and a strongpoint at Mucheng. Parts of the 47th Division and demolition teams broke into Jixian for half the day, attempting to clear it of enemy troops.
[A]: How many bridges Anyang succeeded in destroying along the roads?

[Q]: Passage: A total of about 790,000 tickets were put on sale from February 2015 online, at the Singapore Indoor Stadium and at SingPost outlets. To encourage public participation in the games, it was announced on 28 January 2015 that 18 of the sports will be free for spectators, while the other 18 are kept at relatively affordable levels of between S$5 to S$20. By 15 April 2015 some sports such as swimming and fencing were selling fast, while silat and sepak takraw were much less popular. Organisers reported that ticket sales were pass 70% for most sports by 27 April, with fencing and swimming being the most popular at 85 and 70% tickets sold respectively, while rhythmic gymnastics, silat and wushu have also sold over 70%. Billiards and snooker, equestrian, sepak takraw, taekwondo, and artistic gymnastics have sold about half their tickets. Rugby and judo have sold 30%, while table tennis has sold only 20%. Priced between S$5 to S$20, priority sales for the opening and closing ceremonies tickets for those who registered theirs interests in 2014 began on 15 January 2015, while sales for the general public began on 22 January 2015. In February 2015, tickets to the opening ceremony were going at over seven times their original value on unauthorised websites, despite 40% of the tickets still available at that time. By March 2015, tickets to the opening ceremony were sold out.
[A]:
For how many months were opening ceremony tickets available to the general public before being sold out?