75% knows the answer to this question: "Which Greek philosopher was a boyhood tutor to Alexander the Great? "

And do you know the answer to this one? "What African-American tennis superstar died of AIDS on Feb. 6, 1993?"

79% knows the answer to this question: "Who was Thomas Jefferson? "

And do you know the answer to this one? "In which state did the Battle of the Alamo take place?"

73% knows the answer to this question: "What is four fifths as a decimal? "

And do you know the answer to this one? "How many is the number of colours in the rainbow plus the months of the year?"

59% knows the answer to this question: "New York cheesecake is included in which cuisine? "

And do you know the answer to this one? "New England clam chowder is included in which cuisine?"

57% knows the answer to this question: "Which countries flag has three horizontal stripes, black, red and yellow from top to bottom? "

And do you know the answer to this one? "Who was sworn in as President in 1963 after the assassination of Kennedy?"

90% knows the answer to this question: "In photography, a telephoto lens is used for what special purpose? "

And do you know the answer to this one? "Who sang the famous song "If You Knew Susie (Like I Know Susie)" in 1925? "

41% knows the answer to this question: "Which is a common type of screwdriver? "

And do you know the answer to this one? "What is henna used for?"

64% knows the answer to this question: "The name of which mountain range is linked to a book of maps? "

And do you know the answer to this one? "In what U.S. state are the cities of San Diego, San Jose, Fresno and Sacramento located?"

88% knows the answer to this question: "Which of these cities has four buildings in the top ten tallest buildings in the US? "

And do you know the answer to this one? "What nationality was Yoko Ono, who married John Lennon in 1969?"

60% knows the answer to this question: "What is the name of the Prince of Wales, invested in 1969? "

And do you know the answer to this one? "Which of this selection is a city in Oregon?"

73% knows the answer to this question: "Thomas Jefferson was instrumental in the composition of which historic document? "

And do you know the answer to this one? "What year was the link between cancer and tobacco tar first discovered?"

49% knows the answer to this question: "Which is the complete name of former US Secretary of State Kissinger? "

And do you know the answer to this one? "In what Asian city is Tiananmen Square, which became known in 1989 as a protest site, located?"