50% knows the answer to this question: "What is the main part of a letter called? "

And do you know the answer to this one? "What is a 6 letter word meaning "to assert to be true, especially in a formal manner, as in court"?"

44% knows the answer to this question: "On what day was Jesus crucified? "

And do you know the answer to this one? "The Royal Albert Hall is named after which monarch's husband?"

65% knows the answer to this question: "In what year did Franklin D. Roosevelt's second Secretary of the Navy end his service? "

And do you know the answer to this one? "Which of these is not a UK port?"

95% knows the answer to this question: "What was the alignment of nations the Axis fought in World War II called? "

And do you know the answer to this one? "What currency was used in Greece before the Euro?"

65% knows the answer to this question: "According to Nobel winner Robert Richardson, a balloon's worth of what gas would cost have cost $100 in 2010, if the market set the price? "

And do you know the answer to this one? "As Neil Young would know, what is the nickname for the full moon occurring closest to the autumnal equinox, so named because, with the moon rising opposite the sunset, it provides strong moonlight all night long?"

41% knows the answer to this question: "Who are the starring twin brothers from Rudolph Dirks' 1897 comic "The Katzenjammer Kids"? "

And do you know the answer to this one? "What song has the line, "Why can't you see what you're doing to me when you don't believe a word I say?""

93% knows the answer to this question: "Francisco Orellana ended up the first white to navigate the Amazon to its mouth, but he was really looking for what city, where kings were covered in gold dust? "

And do you know the answer to this one? "The Hundred Years' War was fought between which two countries?"

52% knows the answer to this question: "How many continents are there? "

And do you know the answer to this one? "How many operas were composed by Verdi?"

58% knows the answer to this question: "What does the 'F' stand for in the name of President John F Kennedy? "

And do you know the answer to this one? "Which of the following Presidents' First Lady was named Martha?"

67% knows the answer to this question: "What do indefinite pronouns refer to? "

And do you know the answer to this one? "During the American civil War, in which year did the battle of 'Santa Rosa Island' take place?"

82% knows the answer to this question: "A purple stripe on a Roman tunic was a sign of what? "

And do you know the answer to this one? "Why would you want a HVAC system for your house?"

80% knows the answer to this question: "Which famous musician disappeared whilst onboard a plane in 1944? "

And do you know the answer to this one? "Who had hit songs doing duets with Michael Jackson and Stevie Wonder in the 1980s?"