39% knows the answer to this question: "What design principle refers to a relationship between objects in terms of size, quantity or degree? "

And do you know the answer to this one? "How long have cats been domesticated?"

76% knows the answer to this question: "Which weapon was used by Aboriginal Australians? "

And do you know the answer to this one? "Martin Luther King, Jr., John F. Kennedy and Robert F. Kennedy were assassinated during this decade."

56% knows the answer to this question: "Enough is ... "

And do you know the answer to this one? "It is the ... wheel that gets the grease"

40% knows the answer to this question: "What kind of bean is used to make tofu? "

And do you know the answer to this one? "Finish the line of this 60's song lyric: 'If you want to know if he loves you so, It's?'"

75% knows the answer to this question: "In what war was the 'Battle of Nashville'? "

And do you know the answer to this one? "Is a fiddle a wind, string, percussion or keyboard instrument?"

86% knows the answer to this question: "What is the main ingredient of guacamole (and also the ingredient for which it is named in Nahuatl)? "

And do you know the answer to this one? "In 1912, which country gave the United States the yoshino cherry trees that bloom every year in Washington along the Tidal Basin?"

35% knows the answer to this question: "In the Dr. Seuss story, what did the Grinch try to steal? "

And do you know the answer to this one? "Going on a "Ring Around the Rosie" there's a pocket full of what?"

84% knows the answer to this question: "Far from being sold into the trade as children, many of today's geisha are unionised. Where would you hire one? "

And do you know the answer to this one? "What is a high-water mark?"

42% knows the answer to this question: "What shape is the Washington, D.C. Department of Defense headquarters which opened in 1943? "

And do you know the answer to this one? "Where was Premier Milka Planinc in power from 1982-1986?"

43% knows the answer to this question: "What cooking technique involves soaking meat in oil, wine, herbs or garlic? "

And do you know the answer to this one? "Who was the villain in "Peter Pan"?"

49% knows the answer to this question: "What is the special vehicle with bulletproof glass designed for Pope John Paul II's public appearances? "

And do you know the answer to this one? "89 people bought a new hat for Clare's wedding. 23 people forgot to take theirs home. How many people left with their hats?"

88% knows the answer to this question: "What South American country has taken its name from a famous line of latitude? "

And do you know the answer to this one? "What was the name of Grace Kelly and Prince Rainier's first child, born in 1957?"