50% knows the answer to this question: "An examination of the chest and its contents by X-ray is commonly known as what? "

And do you know the answer to this one? "Despite being a better runner than a flyer, what bird ends up in pear trees every Christmas?"

72% knows the answer to this question: "What is a small hole in a tooth also known as? "

And do you know the answer to this one? "What part of your body does calcium aid? "

84% knows the answer to this question: "Which item of clothing do you wear inside of your shoes? "

And do you know the answer to this one? "Israel continued a series of peace talks with what territory in 2013?"

70% knows the answer to this question: "Until early 2008, Fidel Castro was the ruler of what country? "

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

69% knows the answer to this question: "Scotland is the birthplace of what ball and stick sport? "

And do you know the answer to this one? "Vatican City is the capital of what country?"

78% knows the answer to this question: "During parhelia, the rays of a setting sun produce the illusion of "extra suns." What is their canine name? "

And do you know the answer to this one? "Famous for rescuing people buried under Alpine avalanches, the St Bernard was bred at the hospice of Saint Bernard of Menthon on the Great Saint Bernard Pass. Where?"

30% knows the answer to this question: "How many ounces are in 6 pounds? "

And do you know the answer to this one? "How do you write one million in standard form?"

58% knows the answer to this question: "What Princess did Carrie Fisher play in 1977 movie 'Star Wars'? "

And do you know the answer to this one? "What is the most northerly U.S. state?"

87% knows the answer to this question: "Whose tombstone reads, "Everybody loves somebody sometime," for a song he only recorded because he was one short on a 1964 album? "

And do you know the answer to this one? "Who sang the famous song "Take The “A” Train" (1940)?"

64% knows the answer to this question: "Which company's name is associated with the iPhone? "

And do you know the answer to this one? "Bruce Springsteen had which hit single in 1981?"

71% knows the answer to this question: "Who is credited with bringing tobacco to England? "

And do you know the answer to this one? "In what city's St Louis #1 Cemetery would you find the remains of reputed voodoo queen Marie Leveau?"

86% knows the answer to this question: "After coming back from exile on Elba, whose Hundred Days ended with defeat at Waterloo? "

And do you know the answer to this one? "What was the head of state in Iran called before the revolution of 1979?"