34% knows the answer to this question: "The Great Barrier Reef has its own what? "

And do you know the answer to this one? "Which Rolling Stones song has the line "Don't hang around 'cause two's a crowd"?"

35% knows the answer to this question: "What was the family name of Mary Queen of Scots? "

And do you know the answer to this one? "Which of the following Presidents served during the 1950s?"

64% knows the answer to this question: "Which planet were the Viking spacecrafts I and II sent to study? "

And do you know the answer to this one? "What are the three main categories of rock?"

37% knows the answer to this question: "Which European city was home to the Roman General Julius Caesar? "

And do you know the answer to this one? "Which pair of animal species and type is correct?"

88% knows the answer to this question: "The definition of "lower number in blood pressure reading; pertaining to resting or relaxation phase of heart beat" best fits this medical term? "

And do you know the answer to this one? "What is often prevented by following recommended guidelines for introducing new foods to babies?"

55% knows the answer to this question: "Which of these continent - country - capital groups is correct? "

And do you know the answer to this one? "Tiergarten and Kreuzberg are suburbs of which European capital?"

76% knows the answer to this question: "Which medical abbreviation describes coronary heart disease? "

And do you know the answer to this one? "What type of drug promotes blood clotting?"

84% knows the answer to this question: "Who is the pop star that died from complications from an eating disorder, anorexia nervosa? "

And do you know the answer to this one? "Who was in the car with Diana, Princess of Wales when the deadly car crash occurred?"

52% knows the answer to this question: "The song 'My Heart Will Go On' by Celine Dion is from which movie soundtrack? "

And do you know the answer to this one? "Which is a hit song by Tom Jones?"

90% knows the answer to this question: "What device controls temperature with a switch? "

And do you know the answer to this one? "What is at the center of all bundt cake pans?"

85% knows the answer to this question: "Which pair of animal species and type is correct? "

And do you know the answer to this one? "What does ITTF, the governing body for all international table tennis associations, stand for?"

60% knows the answer to this question: "Which of these species is an endangered goose that lives on volcanic slopes? "

And do you know the answer to this one? "Who was Henry VI the only child of?"