80% 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?"

82% 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"

77% 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?"

33% 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?"

94% 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 is the name of the royal residence located in Kensington Gardens?"

72% 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?"

36% 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"?"

33% 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? "

62% knows the answer to this question: "Who played Jack Sparrow in the Pirates of the Caribbean movies? "

And do you know the answer to this one? "What are the large masses of land containing most of the world's countries called?"

76% knows the answer to this question: "What is 100 take away 64? "

And do you know the answer to this one? "According to legend, who rode through the streets of Coventry naked and was seen by someone called Tom, leading to the phrase "Peeping Tom"?"

56% knows the answer to this question: "I was once in the Beatles and I worked with Kanye West in 2014. Who am I? "

And do you know the answer to this one? "Antarctica is the only continent completely covered in what?"

47% knows the answer to this question: "What Rodgers and Hammerstein musical was based on Margaret Landon's novel "Anna and the King of Siam"? "

And do you know the answer to this one? "What kind of '... Fields Forever' was a hit for the Beatles in the '60s and Candy Flip in the '90s?"