85% knows the answer to this question: "In what U.S. state are the cities of Philadelphia, Pittsburgh and Harrisburg located? "

And do you know the answer to this one? "The most northerly city in England is?"

32% knows the answer to this question: "What was a cultural and intellectual movement in Europe from the 14th to the 17th century? "

And do you know the answer to this one? "Who was William Shakespeare?"

66% knows the answer to this question: "What dynasty built most of the present-day Great Wall of China as a way to keep out the Mongols? "

And do you know the answer to this one? "Who ruled the Soviet Union for more than two decades, instituting a reign of terror while modernizing Russia?"

82% knows the answer to this question: "Complete the name of Bobby Freeman's 1958 song 'Do You Want To _____'. "

And do you know the answer to this one? "Nobody is sure how Felis silvestris catus makes this sound, and we're not even sure why, but we do know that the vibrations reduce stress in people, and that they occur at a frequency that helps bones heal. What sound is this?"

44% knows the answer to this question: "Vietnam is located on which continent? "

And do you know the answer to this one? "Who sang the movie soundtrack to the movie 'Purple Rain'?"

64% knows the answer to this question: "Hollywood and Napa Valley are in which state? "

And do you know the answer to this one? "Alred Hitchcock became a citizen of which country in 1955?"

75% knows the answer to this question: "What yellow dot-eating creature made his arcade debut in 1981? "

And do you know the answer to this one? "Which of these is not a real state?"

89% knows the answer to this question: "There were only two commercially used supersonic jets. The Brits and French shared the Concorde. What country offered the Tupolev Tu-144? "

And do you know the answer to this one? "What semi-ersatz country created its own national airline by chartering Mistral Air to fly out to pilgrimage sites?"

75% knows the answer to this question: "Cataract surgery involves removing which part of the eye? "

And do you know the answer to this one? "Seasonal Affective Disorder usually affects people at which time of year?"

33% knows the answer to this question: "Which Hitchcock movie is about a wheelchair-bound man, watching his neighbours? "

And do you know the answer to this one? "What colour was the "Itsy Bitsy Teeny Weeny Bikini" in 1960?"

93% knows the answer to this question: "What does the T stand for in DVT? "

And do you know the answer to this one? "Most people conscripted into the Army in the 1930s and 40s went in at which rank?"

33% knows the answer to this question: "Which film directed by David Lean in 1965 starred Julie Christie and Omar Sharif? "

And do you know the answer to this one? "Which kind of set-up refers to a replication of a cinema at the comforts of the home?"