46% knows the answer to this question: "Charles de Gaulle stepped down as leader of which country in 1969? "

And do you know the answer to this one? "What territory was named named by Columbus for Saint Ursula of Cologne and her 11,000 virgin martyrs?"

65% knows the answer to this question: "The medical term "prognosis" is best defined as? "

And do you know the answer to this one? "Who had a dream that his "four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character"?"

39% knows the answer to this question: "Which of these units in the scientific measurement system is used to measure length? "

And do you know the answer to this one? "An examination of the chest and its contents by X-ray is commonly known as what?"

44% knows the answer to this question: "St. Patrick is the patron saint of which country? "

And do you know the answer to this one? "Who is Billie Jean King?"

84% knows the answer to this question: "What body of water touches the eastern coast of Mexico? "

And do you know the answer to this one? "What was the name of the plastic hoop which hit the shops in 1958?"

61% knows the answer to this question: "In 2001, what disease got started with some pigs in Northumberland, England? "

And do you know the answer to this one? "The membrane in the ear is named for what musical instrument?"

38% knows the answer to this question: "What is the medical term for a defect in memory? "

And do you know the answer to this one? "What medical term is used when a person is unconscious?"

33% knows the answer to this question: "What comes in a particular variety for left-handed people? "

And do you know the answer to this one? "What is North America's most famous resort city for gambling, shopping, and entertainment?"

62% knows the answer to this question: "In stargazing, the dark patches on the moon are known as what? "

And do you know the answer to this one? "Which beach is located in Guatemala?"

88% knows the answer to this question: "Which European country was given a bailout by the European Union in 2013? "

And do you know the answer to this one? "Which entertainer recorded The Astaire Story in 1952?"

80% knows the answer to this question: "Who proclaimed the Communist People's Republic of China in 1949? "

And do you know the answer to this one? "What is the name of the thousands of ancient clay sculptures depicting the armies of Qin Shi Huang, the First Emperor of China?"

71% knows the answer to this question: "Who refused to give up his or her bus seat to make room for a white passenger on 1 December 1955? "

And do you know the answer to this one? "What was the name of the Frenchman who was voted Man of the Year by TIME magazine in 1958?"