67% knows the answer to this question: "The Seine and Rhine are what in Europe? "

And do you know the answer to this one? "What country gets its name from the old Roman port of Portus Cale, now called Oporto?"

44% knows the answer to this question: "Roger Tullgren got disability benefits in Sweden because of his addiction to what musical genre, which started when he heard Black Sabbath as a toddler? "

And do you know the answer to this one? "Which breed of dog is used for hunting upland birds?"

63% knows the answer to this question: "What is done to a baking tin to prevent food from sticking to it? "

And do you know the answer to this one? "The definition of "digital audio tape" best fits what term?"

41% knows the answer to this question: "In 1994, what country invaded Chechnya? "

And do you know the answer to this one? "What color of paint is hardest to see on black paper?"

90% knows the answer to this question: "The ancient practice of foot binding was popular in what country? "

And do you know the answer to this one? "What is 85 plus the number of days in January?"

81% knows the answer to this question: "In which decade did Elvis have his first No.1? "

And do you know the answer to this one? "Where was Abraham Lincoln assassinated?"

54% knows the answer to this question: "Shylock is a character in which Shakespeare play? "

And do you know the answer to this one? "Which continent has the fewest countries?"

65% knows the answer to this question: "What color are holly berries? "

And do you know the answer to this one? "What is a ring-tailed lemur classified as?"

81% knows the answer to this question: "Ireland's population grew phenomenally because of what New World food, then shrank again when the fungus Phytophthora infestans struck the crop in the 1840s? "

And do you know the answer to this one? "What is the name of the Ukrainian power plant where a major nuclear accident occurred in 1986?"

84% knows the answer to this question: "Which integer represents a temperature of 3 degrees below zero? "

And do you know the answer to this one? "A barrel of which linking animals was a popular 70s toy?"

40% knows the answer to this question: "What playful word describes the fatty streaks found in meat? "

And do you know the answer to this one? "What were the games that were held in Greece to honour the god Zeus called? "

33% knows the answer to this question: "I'm a video game plumber who rescues Princess Peach from Bowser. Who am I? "

And do you know the answer to this one? "In 1492, after crossing the Atlantic Ocean, Columbus arrived in the Bahamas with three ships. What was the name of the largest of these ships?"