Problem: In 1849, Horne's began operations and soon became a leading Pittsburgh department store. In 1879, it opened a seven-story landmark which was the first department store in the city's downtown. In 1972, Associated Dry Goods acquired Horne's, and ADG expanded operations of Horne's to several stores in suburban malls throughout the Pittsburgh region as well as in Erie, Pennsylvania and Northeast Ohio. In December 1986, Horne's was acquired by a local investor group following ADG's acquisition by May Department Stores. By 1994, Federated Department Stores acquired the remaining ten Horne's stores and merged them with its Lazarus division, completely ceasing all operations of any store under the Horne's name.
In what year did Horne stop doing business?
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Answer: unanswerable

Problem: Real estate is a major force in the city's economy, as the total value of all New York City property was assessed at US$914.8 billion for the 2015 fiscal year. The Time Warner Center is the property with the highest-listed market value in the city, at US$1.1 billion in 2006. New York City is home to some of the nation'sand the world'smost valuable real estate. 450 Park Avenue was sold on July 2, 2007 for US$510 million, about $1,589 per square foot ($17,104/m), breaking the barely month-old record for an American office building of $1,476 per square foot ($15,887/m) set in the June 2007 sale of 660 Madison Avenue. According to Forbes, in 2014, Manhattan was home to six of the top ten zip codes in the United States by median housing price.
What was the price per square meter of 660 Madison Avenue in June 2007?
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Answer: $15,887

Problem: Early HDTV commercial experiments, such as NHK's MUSE, required over four times the bandwidth of a standard-definition broadcast. Despite efforts made to reduce analog HDTV to about twice the bandwidth of SDTV, these television formats were still distributable only by satellite.
Despite the reduced bandwith, HDTV format still had to be distributed how?
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Answer:
by satellite