70% 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?"

89% 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?"

49% knows the answer to this question: "What is the clear, straw coloured part of your blood called? "

And do you know the answer to this one? "What is the name for any plant used for flavoring, food, medicine or perfume? "

85% 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"

32% 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?"

45% knows the answer to this question: "Which iconic fast food chain expanded rapidly in the 1980s, creating thousands of jobs? "

And do you know the answer to this one? "Which one of the following means "a place for instruction"?"

77% knows the answer to this question: "What director got his middle name, both from the car company that sponsored his dad's radio show and from the man for whom the hospital in which he was born was named? "

And do you know the answer to this one? "As you might guess from the title, where is the Jean Renoir romance Partie de Campagne set?"

84% knows the answer to this question: "In 1970, Alan Shugart was credited with which invention/discovery? "

And do you know the answer to this one? "A memorial to Louis Chevrolet is displayed at which well-known American auto racing track?"

70% knows the answer to this question: "What are Earth's seven large land masses called? "

And do you know the answer to this one? "Which historical figure is Santa Claus based on?"

63% knows the answer to this question: "Which of these UK cities is closest to Big Ben? "

And do you know the answer to this one? "Which Australian city is most famous for its opera house and harbour bridge? "

45% knows the answer to this question: "What month has the least number of days? "

And do you know the answer to this one? "The official residence of the British Prime Minister is in which London street?"

75% knows the answer to this question: "OS stands for _________? "

And do you know the answer to this one? "What does the C stand for in the lung condition COPD?"