33% knows the answer to this question: "What is the name for small spots of pigment on the skin? "

And do you know the answer to this one? "Which fruit has short, sharp leaves rising from its top?"

38% knows the answer to this question: "The amount of mineral matter per square centimetre of bones is known as what? "

And do you know the answer to this one? "When the ... gets tough, the tough get going"

36% knows the answer to this question: "What is the name for any plant used for flavoring, food, medicine or perfume? "

And do you know the answer to this one? "What is the clear, straw coloured part of your blood called?"

72% knows the answer to this question: "Which of these celebrities publically endorsed Barack Obama in early 2008? "

And do you know the answer to this one? "Civil rights activists marched from Selma to Montgomery in which US state in 1966?"

32% knows the answer to this question: "What was the first name of 1920s British crime writer Mrs Christie? "

And do you know the answer to this one? "What was President Ford's first name?"

44% knows the answer to this question: "Ma Ying-jeou won a second term as President of what island country in 2012? "

And do you know the answer to this one? "In which U.S. city is the Liberty Bell found in?"

38% knows the answer to this question: "Name the country with the world's highest population? "

And do you know the answer to this one? "Which 1950s singer claims to be "the architect of rock and roll"?"

41% knows the answer to this question: "What US state is nicknamed "The Lone Star state"? "

And do you know the answer to this one? "What street is the White House on? "

43% knows the answer to this question: "What medical name describes the spasmodic twitching of a muscle or group of muscles? "

And do you know the answer to this one? "Which bone is the longest in an adult human?"

52% knows the answer to this question: "What do all animals, including dinosaurs and humans, need for energy and growth? "

And do you know the answer to this one? "Which of these is a term for a naturally occurring substance found on Earth?"

31% knows the answer to this question: "What were Enigma machines used for during World War II? "

And do you know the answer to this one? "Finish the country's name: Democratic Socialist Republic of Sri _______."

92% knows the answer to this question: "What are horizontal and vertical lines on a map called? "

And do you know the answer to this one? "Out of 967 people, 234 are left handed. How many are right handed?"