49% 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?"

57% 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?"

77% knows the answer to this question: "What type of anaesthetic numbs a small area but keeps you awake? "

And do you know the answer to this one? "What is the name to coloured marks on the skin, often seen in babies?"

30% knows the answer to this question: "If New York is the Big Apple, what Crossroads of the Pacific is the Big Pineapple? "

And do you know the answer to this one? "What is the London street address of fictional detective Sherlock Holmes?"

57% knows the answer to this question: "Which nationality do shanghai pan-fried noodles belong to? "

And do you know the answer to this one? "Strictly speaking, what food is bee vomit, since nectar is converted in the insect's oesophagus and then upchucked?"

60% knows the answer to this question: "Which of these is the longest river in the world? "

And do you know the answer to this one? "What country has considered changing its national anthem to Sibelius's Finlandia?"

63% knows the answer to this question: "A tendon connects muscles to what? "

And do you know the answer to this one? "Which is not a contagious illness?"

93% knows the answer to this question: "The light bulb was invented by whom? "

And do you know the answer to this one? "Which of these major natural disasters occurred in San Francisco in both 1906 and 1989?"

87% knows the answer to this question: "In "Charlotte's Web", what type of animal is Charlotte? "

And do you know the answer to this one? "What energy is stored in the form of chemical compounds?"

88% knows the answer to this question: "Who sang the famous song "Graceland" (1987) "

And do you know the answer to this one? "What famous character could spin straw into gold?"

66% knows the answer to this question: "Alexander Graham Bell and his assistant were the first two people to use this invention, but First Lady Lucy Hayes was the third. What? "

And do you know the answer to this one? "The guards at the Tower of London are known by which nickname?"

90% knows the answer to this question: "What kind of geographical features are Bondi and Copacabana? "

And do you know the answer to this one? "Who wrote "The Ugly Duckling"?"