56% knows the answer to this question: "Which tropic passes through the Amazon rainforest? "

And do you know the answer to this one? "In the UK, which area of southwest Devon is the site of a high-security prison?"

82% knows the answer to this question: "Which of the following drinks can be white in color and helps you build strong bones? "

And do you know the answer to this one? "A person might hear reggae, ska, rocksteady, dub, or Bob Marley music from which of these countries?"

32% knows the answer to this question: "Which "X-Men" star wowed critics in 2003's "The Boy From Oz"? "

And do you know the answer to this one? "Aquila chrysaetos symbolized the Roman legions, as well as the Napoleonic, German, Russian and Austro-Hungarian empires. What is it?"

82% knows the answer to this question: "Which is the capital of Afghanistan? "

And do you know the answer to this one? "Who was Malcolm X?"

88% knows the answer to this question: "The Amsterdam Arena is a sports venue in which European country? "

And do you know the answer to this one? "What is the name of President Bill Clinton's first child?"

47% knows the answer to this question: "Who told everyone to go 'Surfing USA'? "

And do you know the answer to this one? "Who had a hit with 'Uptown Girl'?"

50% knows the answer to this question: "By 1957, membership in what US political party had fallen below 10,000, about 15% of whom were FBI informants? "

And do you know the answer to this one? "What was the brutal Wallachian Prince Vlad III posthumously dubbed?"

44% knows the answer to this question: "Milk teeth are generally replaced with how many adult teeth? "

And do you know the answer to this one? "In "Everything seemed suspended in slow motion", what does the word "suspended" mean?"

57% knows the answer to this question: "What is the capital of the Netherlands? "

And do you know the answer to this one? "What country's flag's nine blue and white stripes represent the syllables of the Hellenic Revolution battle-cry "Eleutheria i thanatos," meaning "Freedom or death"?"

73% knows the answer to this question: "In what country are the popular tourist destinations Noosa, Byron Bay and Surfers Paradise? "

And do you know the answer to this one? "In which country were members of the punk band Pussy Riot sent to jail in 2012?"

94% knows the answer to this question: "What is the name of the famous reef of the north coast of Australia? "

And do you know the answer to this one? "Which King of England had six wives?"

80% knows the answer to this question: "How many piano tuners are there in Chicago? This is a famous example of an estimation problem associated with what Italian physicist? "

And do you know the answer to this one? "Which site in Australia is one of the top providers of dinosaur bones in the world?"