72% knows the answer to this question: "What system is the body's defence against bacteria? "

And do you know the answer to this one? "In which city was the coronation of Elizabeth II held in 1953?"

68% knows the answer to this question: "If you are arguing the merits of the Red Delicious and the Valencia, what are you literally doing? "

And do you know the answer to this one? "What bird, a fast runner, rarely flies?"

95% knows the answer to this question: "How many times does 5 go into 75? "

And do you know the answer to this one? "Name the boxer who wrote the book "12 Rounds to Victory"?"

55% knows the answer to this question: "Cappellini is included in which cuisine? "

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

32% knows the answer to this question: "What is the missing word: Give a ... a fish and you feed him for a day. Teach a ... to fish and you feed him for a lifetime "

And do you know the answer to this one? "The utensil called a spork is a cross between a spoon and what other utensil?"

64% knows the answer to this question: "What do you call an object that uses symbols to depict land, roads and bodies of water? "

And do you know the answer to this one? "Which continent has the lowest population?"

36% knows the answer to this question: "Which figure sits at the center of the table in Leonardo da Vinci's "The Last Supper"? "

And do you know the answer to this one? "What number does the Roman numeral "X" stand for?"

50% knows the answer to this question: "Wilson Pickett had a hit in 1965 with which of these songs? "

And do you know the answer to this one? "What is a region of Earth in which all areas share the same time called?"

81% knows the answer to this question: "Who created Facebook? "

And do you know the answer to this one? "Which of these mints, developed by crossbreeding water mint and spearmint, is the source of menthol, which soothes colds and coughs?"

66% knows the answer to this question: "What number, when added to 7, gives 11? "

And do you know the answer to this one? "What crispy skinned duck is named after a Chinese city?"

33% knows the answer to this question: "Find the next number (rounded off) in the following sequence: 39.00, 36.50, 34.00, 31.50... "

And do you know the answer to this one? "Solve this equation for N: 12N = 144?"

50% knows the answer to this question: "Which movie is about an elderly Jewish woman and her African-American chauffeur? "

And do you know the answer to this one? "Who was Dean Martin's most famous film partner?"