31% knows the answer to this question: "What gets formed by the mixture of soap with the calcium and magnesium ions found in hard water? "

And do you know the answer to this one? "Of these, which is a river in Europe?"

88% knows the answer to this question: "How did Marie Antoinette of France die? "

And do you know the answer to this one? "Which of the following is the biggest?"

55% knows the answer to this question: "Shiny are the ... hills "

And do you know the answer to this one? "Many hands make light …"

78% knows the answer to this question: "Time … "

And do you know the answer to this one? "The labourer is worthy of his …"

82% knows the answer to this question: "Which Asian country exploded a nuclear bomb underground in 2013? "

And do you know the answer to this one? "Which American singer was born in 1979?"

81% knows the answer to this question: "What best-selling book is about a hot puzzle craze first originating in Japan? "

And do you know the answer to this one? "What city is called Venezia by the locals?"

47% knows the answer to this question: "Abigail Smith Adams was the wife of which American President? "

And do you know the answer to this one? "Which former French president led the Free French Forces during World War II?"

79% knows the answer to this question: "What mentally ill Russian monarch beat his pregnant daughter in law for dressing provocatively, then killed his own son for trying to stop him? "

And do you know the answer to this one? "Which car company implemented the first large-scale moving assembly line in 1913?"

42% knows the answer to this question: "Singin' in the "..." (1952) "

And do you know the answer to this one? "The Ten "..." (1956)"

30% knows the answer to this question: "What is the term for a lake that is permanently covered by ice? "

And do you know the answer to this one? "A popular new computer was introduced in 1984 named for what kind of apple?"

92% knows the answer to this question: "Which of these meals does not contain protein? "

And do you know the answer to this one? "What fruit juice did Ocean Spray promote to bartenders as a cocktail mix and to physicians as a way to prevent bladder infections in women?"

45% knows the answer to this question: "What is the area of a parallelogram with a base of 8 feet and height of 4 feet? "

And do you know the answer to this one? "A octagon with each side 7 inches long, what is the perimeter?"