50% knows the answer to this question: "Mascarpone is a type of what? "

And do you know the answer to this one? "What fruit is so closely related to the pumpkin that many so-called pumpkins are actually that fruit?"

49% knows the answer to this question: "What is the periodic rise and fall in the ocean's water level called? "

And do you know the answer to this one? "What is the capital city of Mexico, and the largest city in North America by population?"

93% knows the answer to this question: "How many stomachs have humans have? "

And do you know the answer to this one? "Bruxella was the Roman name for which European city?"

37% knows the answer to this question: "Who sang the song "Everybody (Backstreet's Back)"? "

And do you know the answer to this one? "Who sang the famous song "Proud Mary" (1971) ?"

60% knows the answer to this question: "What was Mao Zedong's army called? "

And do you know the answer to this one? "Of which country was Ayatollah Ali Khameini Supreme Leader at the start of the 90s?"

76% knows the answer to this question: "What was the name of the brothers who made the first controlled, sustained flight of a powered aircraft? "

And do you know the answer to this one? "This German printer invented the printing press in 1440."

50% knows the answer to this question: "Who sang the famous song "Heart Of Glass" (1979)? "

And do you know the answer to this one? "Who sang the famous song "Rose Garden" (1971)?"

32% knows the answer to this question: "Where would you be if you encountered the prehistoric, aquatic monster that Scotsman swear still exists? "

And do you know the answer to this one? "Of the world's 40+ monarchies, about a third of them recognise what country's monarch as their own?"

87% knows the answer to this question: "What was the name of JFK's son? "

And do you know the answer to this one? "Which of these is the largest gulf in the world?"

72% knows the answer to this question: "In "Harriet the Spy", Harriet and her friends form a club and give it what name? "

And do you know the answer to this one? "Which "Lady" did the Beatles have a hit about in 1968?"

31% knows the answer to this question: "What is half of 32, times 6? "

And do you know the answer to this one? "How many days will it take to drive 3500 miles if you average 700 miles each day?"

80% knows the answer to this question: "What colour is standard cellophane? "

And do you know the answer to this one? "What are food preservatives designed to do?"