30% knows the answer to this question: "What did David Livingstone name the famous waterfall he came across when navigating the Zambezi river? "

And do you know the answer to this one? "Known for a blackface minstrel character called Gus, who had a monster hit with George Gershwin's "Swanee," from his show "Sinbad"?"

79% knows the answer to this question: "Which region did The Vikings come from? "

And do you know the answer to this one? "Prince Rainier of Monaco married an actress from which country in 1956?"

50% knows the answer to this question: "Which famous toy bricks were patented in 1958? "

And do you know the answer to this one? "What is the answer to this equation? 72 ÷ 8"

46% knows the answer to this question: "2103+1406+709 equals what number? "

And do you know the answer to this one? "The lowest temperature temperature in the US was recorded where?"

81% knows the answer to this question: "Violet Gibson was a rich Irish woman with paranoid religious delusions. In 1926, she fired a shot at what dictator, shooting him in the nose after he opened a hospital in Rome? "

And do you know the answer to this one? "In what modern day country was the Nazi Concentration Camp 'Plaszow' located?"

90% knows the answer to this question: "If you knead and prove bread what is your job title? "

And do you know the answer to this one? "C. S. Lewis wrote a series of books set in which fictional land?"

90% knows the answer to this question: "What is 7,051 rounded to the nearest 10? "

And do you know the answer to this one? "What is the total amount of sides, if you look at a triangle and a square?"

59% knows the answer to this question: "How many feet long is a 100-yard football field? "

And do you know the answer to this one? "If you buy a $14,000 car, paying $2000 down plus a $2500 trade-in, how much is the balance?"

79% knows the answer to this question: "Which is the capital of Russia? "

And do you know the answer to this one? "What is 3,761 rounded to the nearest 10?"

66% knows the answer to this question: "What shape were the tombs in which the Ancient Egyptians buried their dead? "

And do you know the answer to this one? "Which country had trouble dealing with separatist rebels in Quebec in the '70s?"

82% knows the answer to this question: "Daniel Radcliffe plays which character in the Harry Potter films? "

And do you know the answer to this one? "In which country was pottery invented?"

43% knows the answer to this question: "Work started on which theme park in January 1954? "

And do you know the answer to this one? "Which devastating disease was found in cattle in December 1957 in the UK?"