42% knows the answer to this question: "Back in the 1970s, which of these items might have been quadraphonic? "

And do you know the answer to this one? "In 2001, what country's aging Luftwaffe pilots claimed to have been the first to break the sound barrier, back in 1945?"

89% knows the answer to this question: "What country borders Laos, Thailand and Vietnam? "

And do you know the answer to this one? "Caraquenos are residents of what country's capital city?"

51% knows the answer to this question: "What did George Washington insist on calling "Federal City" rather than by its official name? "

And do you know the answer to this one? "How did Nikita Khrushchev die?"

76% knows the answer to this question: "What U2 song contains the lyrics, "a freeway like a river cuts through this land"? "

And do you know the answer to this one? "What nickname did Jean-Claude Van Damme pick up, on account of his hometown?"

83% knows the answer to this question: "What was Sri Lanka called before 1972? "

And do you know the answer to this one? "What nationality was the explorer Lawrence Oates?"

39% knows the answer to this question: "What good king looked out on the feast of Stephen when the snow lay round about deep and crisp and even? "

And do you know the answer to this one? "Finish the title of Scorpions' song: "Wind of ______"."

37% knows the answer to this question: "Which of these teeth is furthest back and can include wisdom teeth? "

And do you know the answer to this one? "The ancient Greeks and Romans knew all about truffles. What is this truffle?"

71% knows the answer to this question: "If two lines both have a slope of 1/3 and they don't share any points, what are they called? "

And do you know the answer to this one? "If seven erasers equal two pencils in length, how many pencils would equal 28 erasers? "

53% knows the answer to this question: "What country did Charles de Gaulle become president of after World War II? "

And do you know the answer to this one? "Who was the most notable leader of the slaves in the Gladiator War which took place between 73 BC and 71 BC?"

45% knows the answer to this question: "Ironically, what Swiss dog breed was nearly wiped out by a series of avalanches in the 1810s? "

And do you know the answer to this one? "What is another word for a champagne glass?"

82% knows the answer to this question: "Which word is spelled wrong? "

And do you know the answer to this one? "In what movie does Hannibal say, "Good evening, Clarice," but never, "Hello, Clarice"?"

88% knows the answer to this question: "Because bakers were worried about shortchanging customers, how many loaves are there in a baker's dozen? "

And do you know the answer to this one? "Which leader of China died in 1976?"