47% knows the answer to this question: "If you want to read 900 pages, and you've read two 400-page books, how many more pages do you need? "

And do you know the answer to this one? "Roger Bacon was the first to record a recipe for this: seven parts saltpetre, five parts charcoal and five parts sulphur. Today the ratio is 75%, 15% and 10%. What is it?"

66% knows the answer to this question: "Napoleon Bonaparte was emperor of which country? "

And do you know the answer to this one? "As any "king of the world" would know, in what year did the Titanic sink?"

61% knows the answer to this question: "A secret society called the Afrikaner Broederbond infiltrated the National Party so thoroughly that by the 1940s they were running what country? "

And do you know the answer to this one? "What is the name of the waterproof item of clothing which is named after the Scotsman who started selling it in 1824?"

95% knows the answer to this question: "Scarab beetles are most closely associated with which ancient civilisation? "

And do you know the answer to this one? "World War I officially ended with the signing of what treaty on June 28, 1919?"

81% knows the answer to this question: "Who sang the famous song "Another Brick In The Wall" (1980)? "

And do you know the answer to this one? "British and German troops facing each other in Flanders declared a spontaneous and unofficial Christmastime truce in 1914, during what war?"

67% knows the answer to this question: "What do the Robinson's build to live in, in the "Swiss Family Robinson"? "

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

42% knows the answer to this question: "Elephants large ears help them to what? "

And do you know the answer to this one? "What was that again? You don't know what acoustics is? Say what? It's what, now?"

52% knows the answer to this question: "Who sang the famous song "I Walk the Line" (1956)? "

And do you know the answer to this one? "Who sang the famous song "My Prayer" (1956)?"

62% knows the answer to this question: "Who started the 1960s Twist dance craze by popularizing the 12-bar-blues song 'The Twist'? "

And do you know the answer to this one? "Who paid Soul Train dancers Geron "Casper" Candidate and Cooley Jackson to teach him the Moonwalk, which he refined for a Motown appearance?"

87% knows the answer to this question: "What is the small stick used to hold foods together while grilling called? "

And do you know the answer to this one? "What Russian city was formerly known as "Petrograd", and later "Leningrad"?"

77% knows the answer to this question: "Which US state had a gold rush from 1848 to 1855? "

And do you know the answer to this one? "The Battle of Dien Bien Phu took place in which war?"

68% knows the answer to this question: "In which state did Rosa Park refuse to give up her bus seat to a white passenger? "

And do you know the answer to this one? "Who wrote "David Copperfield"?"