67% knows the answer to this question: "What number indicates normal visual acuity? "

And do you know the answer to this one? "Until 1237, most of the world's emeralds came from Cleopatra's Mine in what country?"

45% knows the answer to this question: "In 1866 a 5-cent coin was introduced which became known as the what? "

And do you know the answer to this one? "In which popular 1950s film is a character played by Audrey Hepburn given 24 hours to do as she pleases in the eternal city?"

57% knows the answer to this question: "Palace of Versailles is in which country? "

And do you know the answer to this one? "What is the art of folding paper into shapes, such as flowers and animals, called?"

78% knows the answer to this question: "Who seized power of Libya in 1969 in a bloodless military coup? "

And do you know the answer to this one? "What has the main influence on the US climate?"

75% knows the answer to this question: "Who sang the famous song It's Still Rock And Roll To Me (1980)? "

And do you know the answer to this one? "Who sang the famous song "Will You Love Me Tomorrow" (1960)? "

34% knows the answer to this question: "Who was Claude Monet? "

And do you know the answer to this one? "In 1986, plans were announced for a tunnel under which European body of water?"

76% knows the answer to this question: "Which nationality does fried chicken belong to? "

And do you know the answer to this one? "Who sang the famous song "Night Fever" (1978)?"

78% knows the answer to this question: "What do you call a drink made up of orange juice and vodka? "

And do you know the answer to this one? "Which of the following is a carbonated drink?"

82% knows the answer to this question: "What is usually used for hanging clothing up in a closet? "

And do you know the answer to this one? "Which of these rocks is the hardest?"

57% knows the answer to this question: "Who was credited with the invention/discovery of rubber vulcanisation in 1839? "

And do you know the answer to this one? "Although Tony Blair actually moved next door, what is the official address of Britain's prime minister?"

42% knows the answer to this question: "Which of India's mountain ranges is the world's highest? "

And do you know the answer to this one? "How fast does human hair grow?"

88% knows the answer to this question: "Who was the director of Lincoln? "

And do you know the answer to this one? "What was a Roman "gladius"?"