89% knows the answer to this question: "What number comes next in this sequence: 8, 16, 32, 64...? "

And do you know the answer to this one? "People with a dark skin are especially vulnerable to hypertension. What is this?"

66% knows the answer to this question: "What is the currency of Japan? "

And do you know the answer to this one? "Where is the Mekong River Delta?"

42% knows the answer to this question: "The Rocky Mountains are in which continent? "

And do you know the answer to this one? "Which of the following is not a continent? "

95% knows the answer to this question: "Found in things like chewing gum, xylitol has fewer calories than what it replaces, and because it causes the mouth to produce less plaque and lactic acid, it actually slows down tooth decay. What does xylitol replace? "

And do you know the answer to this one? "What group recorded the most well-known version of the 12-bar-blues-based song "Rock Around the Clock" in 1954?"

52% knows the answer to this question: "In which major world event was Britain involved between 1914 and 1918? "

And do you know the answer to this one? "From West Africa, Synseplaum dulcificum is called miracle berry, and its key ingredient, miraculin, produces what effect, one especially handy if you don't like lemons?"

77% knows the answer to this question: "How many seconds in 10 minutes? "

And do you know the answer to this one? "What is the total of 159 + 33 + 48?"

42% knows the answer to this question: "Fear of water is known as what? "

And do you know the answer to this one? "What do our bodies need from the air we breathe?"

80% knows the answer to this question: "Glen Campbell's 1968 hit was "By The Time I Get To. . . . ."? "

And do you know the answer to this one? "Complete the Engelbert Humperdinck hit song title, "The Last ..."?"

65% knows the answer to this question: "What was the name of the famous General who led the Confederates during the American Civil War? "

And do you know the answer to this one? "The Acropolis is found in which country?"

62% knows the answer to this question: "Muhammad Ali refused to fight in which war? "

And do you know the answer to this one? "What is a surface which has been given a coating of gold called?"

51% knows the answer to this question: "What is an animal with a backbone called? "

And do you know the answer to this one? "As of 2014, what sequel-mad star has been the Nutty Professor twice, Donkey four times and Axel Foley three times?"

58% knows the answer to this question: "What word means the same as the French "souvenir"? "

And do you know the answer to this one? "What is the capital of the Philippines?"