45% knows the answer to this question: "Who had the hit 60's song "Blue Velvet" on Epic? "

And do you know the answer to this one? "Who had the hit 60's song "Do Wah Diddy Diddy" on Ascot?"

68% knows the answer to this question: "Which country started using Zip Codes in 1962? "

And do you know the answer to this one? "What can only be read by the correct decoding key?"

50% knows the answer to this question: "Which 50s sci-fi movie was about an alien called Klaatu who came to earth? "

And do you know the answer to this one? "Since he disliked the habits of his helpers, who helped Michelangelo paint the Sistine Chapel?"

39% knows the answer to this question: "How would you best categorize Barbara Cartland's books? "

And do you know the answer to this one? "In which country would you find the town of Wagga Wagga?"

88% knows the answer to this question: "Name this Mexican dish. "

And do you know the answer to this one? "Name this Mexican dish."

54% 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?"

40% 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?"

38% 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?"

55% 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?"

35% knows the answer to this question: "Who sang the famous song "Zing! Went the Strings of My Heart" (1943)? "

And do you know the answer to this one? "What is unusual about Colombia's Magdalena River?"

44% knows the answer to this question: "Prime Minister Helen Clark is a historical leader of which country? "

And do you know the answer to this one? "2014 marked the release of a drug with a 90-95% success rate against which liver disease?"

55% knows the answer to this question: "When Sultan Taimur bin Feisal tried to abdicate in this country, his British puppetmasters refused to allow it. What country is this? "

And do you know the answer to this one? " Which woman was nicknamed "the lady of the lamp"?"