50% knows the answer to this question: "The C in "The OC" is for "County." What conservative California county, home to Richard Nixon, gives us the O? "

And do you know the answer to this one? "What was the name of the dentist, gambler and gunfighter who assisted Wyatt Earp in the gunfight at the O.K. Corral?"

71% knows the answer to this question: "Which of these is a series of hit films that were produced in the 1960s? "

And do you know the answer to this one? "What service employed such teenager couriers as Buffalo Bill Cody and Wild Bill Hickok, who raced for ten days, carrying the mail 1800 miles?"

54% knows the answer to this question: "What agency did the U.S. government form in response to the launch of Sputnik? "

And do you know the answer to this one? "Which state lies immediately to the south of Colorado?"

53% knows the answer to this question: "What state is Arlington National Cemetery in? "

And do you know the answer to this one? "Which is the complete name of famous politician Kennedy?"

56% knows the answer to this question: "What part of your body helps you keep your balance? "

And do you know the answer to this one? "Antihistamines are used to treat which condition?"

36% knows the answer to this question: "Which Cuban leader visited Nelson Mandela during the latter's presidency? "

And do you know the answer to this one? "Made of Makrana marble, what is Agra's most famous tourist attraction?"

51% knows the answer to this question: "What is the primary ingredient of a Swiss fondue? "

And do you know the answer to this one? "Geneva, the European headquarters of the United Nations, is located in which country?"

32% knows the answer to this question: "In 1981, which of these became the first 24-hour cable network for music? "

And do you know the answer to this one? "What is 1 x 4?"

56% knows the answer to this question: "Where would you find the jugular? "

And do you know the answer to this one? "Hong Kong is a Special Administrative Region of what large Asian nation?"

73% knows the answer to this question: "What is the area of a space that is 3 feet by 4 feet ? "

And do you know the answer to this one? "Bitter-tasting nail polishes are made to help people who do what to their fingernails?"

40% knows the answer to this question: "What US state is nicknamed "The Lone Star state"? "

And do you know the answer to this one? "Which pair of animal species and type is correct?"

35% knows the answer to this question: "Where was the Cullinan Diamond found in 1905? "

And do you know the answer to this one? "What is the largest country in Western Asia by land area, constituting the bulk of the Arabian Peninsula?"