54% knows the answer to this question: "What feature was added to London's City Hall in 2007, to make the building more energy efficient? "

And do you know the answer to this one? "A public square called Campus Martius is part of the effort to rebuild what city, devastated by the decline of its auto sector?"

36% knows the answer to this question: "Mycologists can tell you whether you can eat this food, or whether it is a poisonous toadstool. What is it? "

And do you know the answer to this one? "On which continent would you find the South Pole?"

33% knows the answer to this question: "What is the more common term for haemorrhoids? "

And do you know the answer to this one? "What does the S stand for in IBS?"

43% knows the answer to this question: "Enro Rubik became a Communist millionaire thanks to what invention? "

And do you know the answer to this one? "Which units are used to measure a horse's height?"

38% knows the answer to this question: "Which of the following vegetables can be red, yellow or white? "

And do you know the answer to this one? "In cooking a sauce or custard, what is it called when it is thick and forms a film on a metal spoon?"

36% knows the answer to this question: "Back in the 1970s, why might you (or maybe your dad) have had an eight-track cartridge in the car? "

And do you know the answer to this one? "Besides string and beads, what do you need to make a Native American Dream Catcher?"

67% knows the answer to this question: "In what year was Maggie Thatcher first elected UK Prime Minister? "

And do you know the answer to this one? "In 1960, which manuscripts were found hidden in a cave in Jordan?"

60% knows the answer to this question: "The 'Stade de France' is a sport stadium in which city? "

And do you know the answer to this one? "Which of these is South Africa particularly famous for being a source of?"

37% knows the answer to this question: "Which country was Nikita Khrushchev expelled from the leadership in 1964? "

And do you know the answer to this one? "In what city did Princess Diana die?"

95% knows the answer to this question: "Who sang the famous song "Boogie Woogie Bugle Boy" (1941)? "

And do you know the answer to this one? "Who sang the famous song "The Christmas Song" (1940)?"

89% knows the answer to this question: "If a $64 book is discounted 10%, what is the amount of the discount? "

And do you know the answer to this one? "For the flavour it gets from fermenting bacteria, what does sauerkraut literally mean?"

34% knows the answer to this question: "What is 25% of 400 "

And do you know the answer to this one? "Where is a section of Interstate 75 called Alligator Alley or Everglades Parkway?"