84% knows the answer to this question: "What was the first name of Mr Tell, who in 1307 shot an apple from his son's head? "

And do you know the answer to this one? "Enro Rubik became a Communist millionaire thanks to what invention?"

44% knows the answer to this question: "What is 10% of 80 plus 7? "

And do you know the answer to this one? "How long is a decade?"

68% knows the answer to this question: "What kind of disorder was previously known as manic depression? "

And do you know the answer to this one? "Which species of bird is the smallest?"

43% knows the answer to this question: "What is the state abbreviation for Pennsylvania? "

And do you know the answer to this one? "Which of these is the state abbreviation for Kansas?"

52% knows the answer to this question: "Liverpool is a city in which European country? "

And do you know the answer to this one? "Jerk chicken, fried plantains and mango ice cream are popular foods of what country's cuisine?"

30% knows the answer to this question: "In 1935, Hugh Troy slipped some corned beef into an art exhibit at the Met and claimed it was what artist's severed ear? "

And do you know the answer to this one? "What is a 10-letter word meaning "hard coal"?"

56% knows the answer to this question: "What is 11 plus two dozen? "

And do you know the answer to this one? "What is 50% of 76?"

43% knows the answer to this question: "What is Japan? "

And do you know the answer to this one? "What web site, which allows you to make video calls over the web, gets its name from "sky peer-to-peer"?"

59% knows the answer to this question: "What is the name of a workshop where an artist produces art? "

And do you know the answer to this one? "In which bodily fluid would you find haemoglobin?"

79% knows the answer to this question: "How often does "Leap Year" happen? "

And do you know the answer to this one? "Which of these countries has a largely Nordic and Gaelic population?"

63% knows the answer to this question: "What is a scientist who specializes in the study of cells called? "

And do you know the answer to this one? "What critters don't get caught in their own webs because they have hard, slippery bristles at the ends of their legs that act as runners on the web strands?"

40% knows the answer to this question: "Which species is correctly paired with its type? "

And do you know the answer to this one? "In which US state would you find the famous sports teams the Astros and the Cowboys?"