47% knows the answer to this question: "I'm a champion tennis player with an equally-skilled sister named Venus. Who am I? "

And do you know the answer to this one? "Which chemical, also used in thermometers, was involved in early photo development?"

64% knows the answer to this question: "Which celebrity is known for having multiple plastic surgeries? "

And do you know the answer to this one? "If you have three credit cards on which you owe $4000, $1800 and $2000, what is the total owed?"

61% knows the answer to this question: "What is the state abbreviation for Nebraska? "

And do you know the answer to this one? "What was the name of the Parisian prison which was stormed, marking the start of the Revolution?"

80% knows the answer to this question: "Which of the following is a amphibian? "

And do you know the answer to this one? "Which of the following is a hooved animal?"

31% knows the answer to this question: "What is the name of the medieval wars with Christians trying to get control of Jerusalem? "

And do you know the answer to this one? "Of these, which is a landmark in Europe?"

66% knows the answer to this question: "Jane Austen was an Englishwoman who is famous for her what? "

And do you know the answer to this one? "In what country is the World Heritage site, Wartburg Castle?"

31% knows the answer to this question: "Rossfield Mountain is the hill that's alive with the sound of music in what movie's famous opening sequence? "

And do you know the answer to this one? "Wie speelde 'Forrest Gump'?"

87% knows the answer to this question: "Where would you most likely enjoy a six-movement dance called a hula? "

And do you know the answer to this one? "Which of these 1980 chart-toppers could be described as 'country music'?"

38% knows the answer to this question: "How many sides on a square are the same length? "

And do you know the answer to this one? "What film is about a princess named Anna, and her sister Elsa who becomes queen and has icy powers?"

71% knows the answer to this question: "What did medieval knights wear into battle to protect themselves from injury? "

And do you know the answer to this one? "What is the standard unit, in the United States, to measure the distance between cities?"

94% knows the answer to this question: "What is edible as a young shoot but is better food for pandas when it's grown bigger? "

And do you know the answer to this one? "Ants, bats, bees and the original European settlers of 13 American states are all found in groups known by what name?"

81% knows the answer to this question: "What should people do to stay healthy? "

And do you know the answer to this one? "Which of these should you do before you exercise?"