38% knows the answer to this question: "What is molten rock beneath the surface of the earth called? "

And do you know the answer to this one? "Matthew has 670 Lego sets but Justin has 96 more. How many does Justin have?"

61% knows the answer to this question: "Which actress daughter of Henry was known as Hanoi Jane in the '70's? "

And do you know the answer to this one? "Which band were Ozzy Osbourne, Bill Ward, Tony Iommi, and Geezer Butler in?"

74% knows the answer to this question: "In 2013, several people were killed in a terrorist attack on a mall in which African country? "

And do you know the answer to this one? "In 1940, after seizing the French archives, the Nazis publically destroyed the master copy of what treaty?"

80% knows the answer to this question: "Which of these 1960s films did not star Elvis Presley? "

And do you know the answer to this one? "Which actor was the first African-American to win an Academy Award?"

92% knows the answer to this question: "Which river creates a border between Mexico and the US? "

And do you know the answer to this one? "Which of these countries receives the least amount of rainfall?"

46% knows the answer to this question: "A monkeys is classified as which of these? "

And do you know the answer to this one? "Golda's Balcony was a one-woman show detailing the life of which world leader?"

34% knows the answer to this question: "What state's motto is "Ua mau ke ea o ka aina i ka pono"? "

And do you know the answer to this one? "The French Quarter is what U.S. city's oldest neighbourhood?"

32% knows the answer to this question: "Opening the oven whilst cooking soufflé would cause it to what? "

And do you know the answer to this one? "Which berry is traditionally eaten at Thanksgiving and Christmas in the U.S.?"

82% knows the answer to this question: "What country is made up of 3,000 islands, the largest being Honshu, Hokkaido, Kyushu and Shikoku? "

And do you know the answer to this one? "In which "I" are cows considered sacred?"

95% knows the answer to this question: "Which symbol means that the quantities on both sides of it are the same? "

And do you know the answer to this one? "Which is a strategy game about a realistic infection simulation?"

55% knows the answer to this question: "Despite being mostly empty calories, a bar of what substance (the darker the better) has as many polyphenols as a glass of red wine? "

And do you know the answer to this one? "Which is the only metal that is in liquid form at room temperature?"

55% knows the answer to this question: "In which US state did the Japanese attack Pearl Harbour in 1941? "

And do you know the answer to this one? "In which country were cuckoo clocks invented?"