42% knows the answer to this question: "What device consists of one or more cells that produce direct current? "

And do you know the answer to this one? "In 1965, Mariner 4 disproved the idea that what planet might be full of little-green-men-sustaining canals?"

55% knows the answer to this question: "In which country did the French Revolution take place? "

And do you know the answer to this one? "Persia is an old name for which modern day country?"

44% knows the answer to this question: "Plastic surgery is often needed for women after which procedure? "

And do you know the answer to this one? "Orthopaedics is a medical specialty dealing with what?"

76% knows the answer to this question: "What are large male gorillas often called because of the coloration of their hair? "

And do you know the answer to this one? "What is the official name of the procedure that involves the breakdown and suction of fatty tissue?"

85% knows the answer to this question: "How many days in 12 weeks? "

And do you know the answer to this one? "Mila had 123 in her doll collection last week, and now has 178. How many did she buy this week?"

33% knows the answer to this question: "Which area of the UK is represented by the triskelion? "

And do you know the answer to this one? "What was the name of the Soviet satellite launched on October 4, 1957? "

75% knows the answer to this question: "What is the unit of measurement used to calculate the height of a horse? "

And do you know the answer to this one? "The membrane in the ear is named for what musical instrument?"

30% knows the answer to this question: "What is the name given to any painting that has been made directly on a wall? "

And do you know the answer to this one? "Silicon Valley was established in which US state in the 1970s?"

69% knows the answer to this question: "Which slow, stately dance captured the attention of European kings and queens for over 150 years? "

And do you know the answer to this one? "What do the five rings on Olympic flag represent?"

70% knows the answer to this question: "What type of dog did Queen Elizabeth II of England call her favorite? "

And do you know the answer to this one? "Built around 1450, what ancient city in Peru is the most familiar icon of Inca civilization?"

64% knows the answer to this question: "Which word is spelled wrong? "

And do you know the answer to this one? "Lee Marvin, who passed away in 1987, was most famous for what? "

37% knows the answer to this question: "Alcatraz Prison in which US city closed in 1963? "

And do you know the answer to this one? "What name is used to describe unbranded medication?"