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.

Passage: AH-1 Cobras were in use by the Army during the Tet offensive in 1968 and through to the end of the Vietnam War. Cobras provided fire support for ground forces, escorted transport helicopters and other roles, including aerial rocket artillery (ARA) battalions in the two Airmobile divisions. They also formed "hunter killer" teams by pairing with OH-6 Cayuse scout helicopters. A team featured one OH-6 flying slow and low to find enemy forces. If the OH-6 drew fire, the Cobra could strike at the then revealed enemy. On 12 September 1968, Capt. Ronald Fogleman was flying an F-100 Super Sabre when the aircraft was shot down and he ejected 200 miles north of Bien Hoa.  Fogleman became the only pilot to be rescued by holding on to an Army AH-1Gs deployed gun-panel door. Bell built 1,116 AH-1Gs for the U.S. Army between 1967 and 1973, and the Cobras chalked up over a million operational hours in Vietnam; the number of Cobras in service peaked at 1,081. Out of nearly 1,110 AH-1s delivered from 1967 to 1973 approximately 300 were lost to combat and accidents during the war.  The U.S. Marine Corps used AH-1G Cobras in Vietnam for a short time before acquiring twin-engine Bell AH-1 SuperCobra.
Approximately how many of the 1110 AH-1s delivered from 1967 to 1973 were lost per year on average?

Passage: After a humiliating defeat a week before against the Dolphins, the Texans' defense looked much better holding the Titans to just a field goal in the 1st quarter. Houston's offense scored a touchdown early in the 2nd quarter to take a 7-3 lead. On the ensuing kickoff, Tennessee's Bishop Sankey fumbled the ball with Kurtis Drummond recovering it for Houston. The Texans settled for 3 off the turnover with a 38-yard field goal from Nick Novak. Late in the 3rd quarter Brian Hoyer connected with former Titan Nate Washington for a 42-yard touchdown pass, extending the Texans' lead to 17-6 with Novak making the PAT. To start out the 4th quarter, Kevin Johnson got his first career interception by picking off a Zach Mettenberger pass. Houston failed to capitalized on the turnover, however Tennessee turned the ball over after a J. J. Watt sack, giving the Texans the ball at the Titans' 10-yard line. The Texans scored another 3 points off of the turnover, with Novak making a 24-yard field goal. Houston defeated Tennessee 20-6 and improved to 3-5. Watt, Whitney Mercilus and Jared Crick combined for a total of 6 sacks for the Texans' defense.
How many TD were scored in the first quarter?

Passage: There were 1,882 households of which 21.4% had children under the age of 18 living with them, 36.4% were Marriage living together, 9.7% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 50.4% were non-families. 37.7% of all households were made up of individuals and 13% had someone living alone who was 65 years of age or older. The average household size was 2.20 and the average family size was 2.90.

How many in percent of households didn't have children under the age of 18 living with them?