33% knows the answer to this question: "Swollen gums, gums that are tender and bleeding are signs of what disease? "

And do you know the answer to this one? "What is the membrane that surrounds the brain and spinal cord called?"

54% knows the answer to this question: "Many of the planets are covered in what due to collisions with space matter? "

And do you know the answer to this one? "The heaviest venomous snake is a rattler that shares its name with a baseball team. What is this snake?"

91% knows the answer to this question: "Which one of these can be defined as "unwilling"? "

And do you know the answer to this one? "Reykjavik is the capital of which country?"

69% knows the answer to this question: "What is the official language of Greece? "

And do you know the answer to this one? "Which of these countries is the smallest in terms of area? "

48% knows the answer to this question: "What is the correct name for a product one country sends to another country to be sold? "

And do you know the answer to this one? "What is half of 16, squared?"

84% knows the answer to this question: "Julius Caesar was a what? "

And do you know the answer to this one? "Ida Siekmann was the first of many people killed here, when she tried to jump the wall from her third floor apartment at 48 Bernauer Strasse. Where was this?"

74% knows the answer to this question: "Who sang the famous song "Galveston" (1969)? "

And do you know the answer to this one? "Who sang the famous song "Eight Days A Week" (1965)?"

50% knows the answer to this question: "Which of these countries is the odd one out? "

And do you know the answer to this one? "After giving up half its territory to France in 1861, the half with all the natural resources, what country instead turned to gambling?"

74% knows the answer to this question: "A burrito is included in which cuisine? "

And do you know the answer to this one? "Who is the world famous artist known for his work in pop art that died in 1987?"

82% knows the answer to this question: "What kind of storm might produce a "whiteout"? "

And do you know the answer to this one? "Who sang the famous song "Another Brick In The Wall" (1980)?"

81% knows the answer to this question: "Who famously defeated Bobby Riggs in a televised tennis match in Texas in 1973? "

And do you know the answer to this one? "During what War did the 1847 'Battle of Rio San Gabriel' take place?"

46% knows the answer to this question: "Who sang the famous song "Hello" (1984) ? "

And do you know the answer to this one? "Who sang the famous song "Message In A Bottle" (1979)? "