89% knows the answer to this question: "Which fraction is the largest? "

And do you know the answer to this one? "What river, the longest on its continent, carries more water than do the longest rivers on every other continent combined?"

42% knows the answer to this question: "What is the core human body temperature in degrees Celsius? "

And do you know the answer to this one? "Which member of the Beatles said he wanted to leave in September 1969?"

35% knows the answer to this question: "In the "Harry Potter" saga, what does Harry eat so he can breathe under water? "

And do you know the answer to this one? "Sarcoma is a type of which condition?"

60% knows the answer to this question: "What animal is a brilliant red bird with a short, wide bill? "

And do you know the answer to this one? "Which rocker once got in trouble for urinating on The Alamo in San Antonio, Texas?"

54% knows the answer to this question: "Charles de Gaulle became leader of which country in 1959? "

And do you know the answer to this one? "Which of these lies closest to Australia?"

84% knows the answer to this question: "Which company introduced a box camera called the Brownie in 1900? "

And do you know the answer to this one? "A ripe watermelon has a rind that is what color?"

44% knows the answer to this question: "The male of what mainly nocturnal insect produces a loud, rhythmic, chirping sound? "

And do you know the answer to this one? "In "My Fair Lady," Eliza could have done this all night. And still have begged for more! What?"

39% knows the answer to this question: "Which former UN Secretary-General brokered a peace agreement in Syria in 2012? "

And do you know the answer to this one? "Who ruled Ethiopia between 1916 and 1974?"

86% knows the answer to this question: "In what year did these events happen: the state of Israel is proclaimed; Mahatma Gandhi is assassinated; and the Summer Olympics are held in London? "

And do you know the answer to this one? "In 2005, archaeologists found three 35,000-year-old instruments in Germany made of bone and mammoth tusk. What kind of instruments were they?"

32% knows the answer to this question: "In 1982, who woke up at home to find an intruder sitting on the end of her bed? "

And do you know the answer to this one? "Which of these Ancient Battles occurred earliest?"

38% knows the answer to this question: "Who is John Newcombe? "

And do you know the answer to this one? "How many pieces of fruit and veg are we told to eat daily?"

65% knows the answer to this question: "What nationality was Claude Debussy? "

And do you know the answer to this one? "What is the name of the identifying page that is included with a fax?"