30% knows the answer to this question: "My electricity bill is £120 a quarter. The company announces prices will rise by 52%. How much will my annual bill be? "

And do you know the answer to this one? "Express 6/16 in its lowest terms"

41% knows the answer to this question: "In the German parliamentary election in 2013, who won a third straight election victory? "

And do you know the answer to this one? "SA is the official abbreviation for what?"

40% knows the answer to this question: "With 1,000 plus rooms, what is the largest inhabited castle in the world? "

And do you know the answer to this one? "Which country's largest city is Sao Paulo?"

32% knows the answer to this question: "Which country declared itself independent from France in March 1956? "

And do you know the answer to this one? "The Brusilov Offensive was undertaken by which country?"

45% knows the answer to this question: "Which resort opened in Orlando, Florida in 1971? "

And do you know the answer to this one? "Which Chinese statesman proclaimed the establishment of the People's Republic of China in 1949?"

39% knows the answer to this question: "Gold sells for £785 per ounce. How much is a ring weighing 13 ounces worth? "

And do you know the answer to this one? "151x143÷143 equals what number?"

79% knows the answer to this question: "3900+2604+1308 equals what number? "

And do you know the answer to this one? "1851+1238+625 equals what number?"

95% knows the answer to this question: "Which of these is an island in Australian territory? "

And do you know the answer to this one? "National monument Muir Woods in the San Francisco Bay area, is in which state?"

84% knows the answer to this question: "Which country started using Zip Codes in 1962? "

And do you know the answer to this one? "What can only be read by the correct decoding key?"

76% knows the answer to this question: "Which 50s sci-fi movie was about an alien called Klaatu who came to earth? "

And do you know the answer to this one? "Since he disliked the habits of his helpers, who helped Michelangelo paint the Sistine Chapel?"

89% knows the answer to this question: "Who had the hit 60's song "Blue Velvet" on Epic? "

And do you know the answer to this one? "Who had the hit 60's song "Do Wah Diddy Diddy" on Ascot?"

37% knows the answer to this question: "In Kramer vs Kramer, what are the Kramers battling over? "

And do you know the answer to this one? "In what movie does a character like to buy boxer shorts from the K-Mart at 400 Oak Street in Cincinnati?"