53% knows the answer to this question: "How many calories are there in a glass of water? "

And do you know the answer to this one? "What must you do if you are entering a road from a driveway? "

67% knows the answer to this question: "In the 1250s, the Little Ice Age began, precipitating the Great Famine from 1315-22, which left Europe medically vulnerable to what epidemic from 1347-51? "

And do you know the answer to this one? "What kind of medical condition continues for a long time?"

60% knows the answer to this question: "The ballet "The Nutcracker" is especially popular during which holiday season? "

And do you know the answer to this one? "What organ famously has very little function in humans?"

73% knows the answer to this question: "Which of these was a name commonly given to the 1920s? "

And do you know the answer to this one? "The definition of "chemical or physical agent that tends to cause cancers" best fits which science term?"

33% knows the answer to this question: "What street does the Prime Minister live? "

And do you know the answer to this one? "Which of these was the last US state to be entered into the union?"

92% knows the answer to this question: "What was Elvis' surname? "

And do you know the answer to this one? "What was the name of Queen Elizabeth II's royal yacht, launched in 1953?"

75% knows the answer to this question: "Which TV series was set on the Ponderosa ranch, Nevada? "

And do you know the answer to this one? "Established in 1950, what did the UN World Meteorological Organisatio monitor?"

85% knows the answer to this question: "What did Nissan call its range of cars for the European market? "

And do you know the answer to this one? "Pierre Trudeau became Prime Minister of which country in 1968?"

82% knows the answer to this question: "Nadia Comaneci earned perfect scores in which sport in 1976? "

And do you know the answer to this one? "Christiaan Barnard performed the first transplant of which organ in 1967?"

58% knows the answer to this question: "Which actor starred in 1967 movie "The Graduate"? "

And do you know the answer to this one? "American politician Spiro Agnew was convicted of which crime in 1973?"

81% knows the answer to this question: "Which actor was the first African-American to win an Academy Award? "

And do you know the answer to this one? "What was the occupation of 1960s celebrity Twiggy?"

56% knows the answer to this question: "Who did a farrier make shoes for? "

And do you know the answer to this one? "Most people conscripted into the Army in the 1930s and 40s went in at which rank?"