66% knows the answer to this question: "Which of these is a major Scottish city? "

And do you know the answer to this one? "On April 4, 1964, what pop group held the five top spots on the "Billboard" chart?"

94% knows the answer to this question: "If you're enduring arthroscopic knee surgery, or endoscopic surgery, as it's sometimes called, what is happening to you? "

And do you know the answer to this one? "What was Italy's traditional currency before the euro?"

88% knows the answer to this question: "If you owe $120, how many $20 payments would you make? "

And do you know the answer to this one? "Ahmed earns $14.45 per hour, having just received a $3.20 rise. What was his previous hourly rate?"

33% knows the answer to this question: "What is usually used for hanging clothing up in a closet? "

And do you know the answer to this one? "Which of these rocks is the hardest?"

95% knows the answer to this question: "What is it called when an object makes a full circular rotation? "

And do you know the answer to this one? "What "Russian" dish is beef cubes in a sour cream and mushroom sauce?"

70% knows the answer to this question: "Which car company implemented the first large-scale moving assembly line in 1913? "

And do you know the answer to this one? "Which of these continent - country - capital groups is correct?"

31% knows the answer to this question: "What do you call a drink made up of orange juice and vodka? "

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

34% knows the answer to this question: "What was the purpose of the American Colonization Society, founded in 1816? "

And do you know the answer to this one? "In what US state is the city of Tucson located?"

73% knows the answer to this question: "Which of India's mountain ranges is the world's highest? "

And do you know the answer to this one? "How fast does human hair grow?"

30% knows the answer to this question: "Although Tony Blair actually moved next door, what is the official address of Britain's prime minister? "

And do you know the answer to this one? "Who was credited with the invention/discovery of rubber vulcanisation in 1839?"

82% knows the answer to this question: "What is the best definition for the old word "hearken"? "

And do you know the answer to this one? "What is the medical term for the art of midwifery?"

95% knows the answer to this question: "In 1986, plans were announced for a tunnel under which European body of water? "

And do you know the answer to this one? "This war was fought in almost every part of the world. More than 50 countries participated and an estimated 40 to 50 million people lost their lives."