91% knows the answer to this question: "What seafaring warriors traveled the Oder River in Poland during the Middle Ages? "

And do you know the answer to this one? "What is the condition in which person will not eat, lack of appetite?"

38% knows the answer to this question: "Which of these varieties of beans is not actually a vegetable? "

And do you know the answer to this one? "D-Day is associated with which war?"

65% knows the answer to this question: "The U.S. invaded Afghanistan in 2001 to topple what government? "

And do you know the answer to this one? "Which of the following words is defined as a type of food poisoning?"

81% knows the answer to this question: "What property is a measurement of how hot or cold something is? "

And do you know the answer to this one? "What South American fish can generate a 600-volt shock?"

59% knows the answer to this question: "What body of water touches the eastern coast of Mexico? "

And do you know the answer to this one? "What sugar-regulating human hormone was first isolated in 1922?"

72% knows the answer to this question: "Ottawa is the capital of which country? "

And do you know the answer to this one? "Roman men wore togas and Roman women wore what?"

79% knows the answer to this question: "Which body part of a human senses light information? "

And do you know the answer to this one? "What period began in Italy in 1325 which was known for its contribution to the arts?"

42% knows the answer to this question: "D-Day is associated with which war? "

And do you know the answer to this one? "Britain's Stonehenge is called a megalith because it is made of what?"

94% knows the answer to this question: "Which country's government is communist? "

And do you know the answer to this one? "What is the distance that light travels in a year called?"

63% knows the answer to this question: "What is a change in the form of a species over time called? "

And do you know the answer to this one? "What is the name of the leader who ruled Cuba for 49 years until 2008?"

53% knows the answer to this question: "What is the most flexible muscle in the body? "

And do you know the answer to this one? "Where is Shun Hing Square, completed in 1996 at a height of 1260 feet, located?"

37% knows the answer to this question: "The ancient Egyptians built the pyramids for what purpose? "

And do you know the answer to this one? "In 2012, the 634-meter Tokyo Skytree building opened in which country?"