60% knows the answer to this question: "Which central American country signed a Canal Treaty with the USA in 1955? "

And do you know the answer to this one? "Who had a smash hit in the 1950s with 'Great Balls of Fire'?"

89% knows the answer to this question: "Black people are especially vulnerable to hypertension. What is this? "

And do you know the answer to this one? "Who invented a system of raised dots, allowing blind people to read?"

88% knows the answer to this question: "Who sang the famous song Go Your Own Way (1977)? "

And do you know the answer to this one? "Who sang the famous song Nowhere Man (1965)? "

39% knows the answer to this question: "What is at the center of all bundt cake pans? "

And do you know the answer to this one? "The Casket Letters suggest that what queen, also known as Mary Stuart, had a hand in killing her second husband, Lord Darnley?"

37% knows the answer to this question: "What kind of fluid does your heart pump? "

And do you know the answer to this one? "Obesophobia is the fear of what?"

47% knows the answer to this question: "Who became the supreme leader of North Korea on December 28, 2011? "

And do you know the answer to this one? "What weather phenomenon was the Norse god Thor thought to control?"

71% knows the answer to this question: "Which 2008 film release saw Meryl Streep singing and dancing along to Abba songs? "

And do you know the answer to this one? "Which of these is a parasitic relationship?"

65% knows the answer to this question: "What was the name of Charlie Brown's pet dog, first seen in October 1950? "

And do you know the answer to this one? "Which household electronic item would you adjust to Frequency Modulation?"

77% knows the answer to this question: "What is the most bustling square in New York? "

And do you know the answer to this one? "The following words are from which 1950s film: "This is war. This is not a game of cricket"."

48% knows the answer to this question: "What animal makes up the Odobenus genus, so named because its ability to pull itself out of the icy water by its tusks makes it a "tooth walker"? "

And do you know the answer to this one? "What is another word for a champagne glass?"

57% knows the answer to this question: "Finish the Eternal song title: 'I Wanna Be the____.' "

And do you know the answer to this one? "Which is the longest river wholly in England?"

61% knows the answer to this question: "The most famous gunfight in the history of the Old West took place on 26 October 1881 in Tombstone, Arizona. What is the name of the building where it happened? "

And do you know the answer to this one? "In which state do the Rocky Mountains reach their highest peak?"