36% knows the answer to this question: "How many in a dozen? "

And do you know the answer to this one? "What body of water touches the eastern coast of Mexico?"

42% knows the answer to this question: "Mozzarella is a cheese from which country? "

And do you know the answer to this one? "How many leaves should a clover have to be considered lucky?"

73% knows the answer to this question: "What are the only bear species to be considered marine mammals? "

And do you know the answer to this one? "What was the profession of Guccio Gucci, who died in 1953?"

41% knows the answer to this question: "What historic building might feature a crypt, altar and nave? "

And do you know the answer to this one? "What was the first name of Mr Jobs, who resigned as Apple boss in 2011?"

59% knows the answer to this question: "What is the name of the first mammal to be successfully cloned from an adult cell? "

And do you know the answer to this one? "Albert Einstein was born in which country?"

46% knows the answer to this question: "How many times does 14 go into 42? "

And do you know the answer to this one? "What was the first name of Lindbergh, first man to fly the Atlantic?"

59% knows the answer to this question: "What is the name of the tiny bird that sips flower nectar? "

And do you know the answer to this one? "A devastating 1906 earthquake hit which Californian city?"

78% knows the answer to this question: "What was the name of the second Beatles movie, released in 1965? "

And do you know the answer to this one? "Which of these US cities has hosted the Summer Olympic Games?"

89% knows the answer to this question: "What is one of the main early signs of lung cancer? "

And do you know the answer to this one? "Put crudely, the left hemisphere offers us language, reason and math skill; the right side handles insight and whatever talent for art or music you may have. Sides of what?"

64% knows the answer to this question: "In 2012, the United Nations declared that there was an ongoing civil war in what country? "

And do you know the answer to this one? "Which of these was the last US state to be entered into the union?"

35% knows the answer to this question: "In which of these countries could you see the all big five safari animals? "

And do you know the answer to this one? "In welke film speelde Olivia Newton-John 'Sandy'?"

38% knows the answer to this question: "The English Channel separates England from which other European country? "

And do you know the answer to this one? "A square of what every day is said to be good for the heart?"