73% knows the answer to this question: "The discovery of what in the North Sea prompted a 1970s job boom? "

And do you know the answer to this one? "What racial strife affected South Africa in the 20th century?"

56% knows the answer to this question: "On what Japanese cities did the U.S. drop atomic bombs in 1945? "

And do you know the answer to this one? "What famous magician died from a ruptured appendix on Halloween in 1926?"

55% knows the answer to this question: "Minestrone is included in which cuisine? "

And do you know the answer to this one? "Famous for its tacky tourist attractions, where could you get your kicks on, at least according to a Bobby Troup song?"

81% knows the answer to this question: "How is Orville Wright's August 19 celebrated in the US? "

And do you know the answer to this one? "What is the unit of weight by which a gemstone is measured?"

53% knows the answer to this question: "Which game-show began in 1950? "

And do you know the answer to this one? "Each roll gets 3 sausages. How many sausages are needed for 13 rolls?"

75% knows the answer to this question: "The adjective canine refers to what type of animal? "

And do you know the answer to this one? "Which popular British rock band appeared on the "Ed Sullivan Show" in 1964? "

30% knows the answer to this question: "Jerusalem belongs to which Middle Eastern country? "

And do you know the answer to this one? "Which football term is defined as "when two defensive players cover one receiver"?"

74% knows the answer to this question: "What are the tiny blood vessels that connect arteries and veins? "

And do you know the answer to this one? "American Lewis Waterman had his in a fountain; Hungarian Georg Biro's was on the ballpoint. What had they invented?"

63% knows the answer to this question: "Where is the world's longest wall? "

And do you know the answer to this one? "Where was Prime Minister Margaret Thatcher in power from 1979-1990?"

92% knows the answer to this question: "Which of these continent - country - capital groups is correct? "

And do you know the answer to this one? "The mixto sandwich also has what name, for the country where it has been popular in cigar factories and sugar mills?"

84% knows the answer to this question: "In 2008, Barack Obama said that the primary season was about "the past versus" the what? "

And do you know the answer to this one? "What is the word for a group of hounds?"

69% knows the answer to this question: "On US highways, what does the letter 'I' stand for? "

And do you know the answer to this one? "Her last name, Gudmundsdottir, simply indicates who her dad is, while her first name means "birch" in Icelandic. Who is she?"