46% knows the answer to this question: "What is a large area of level ground called? "

And do you know the answer to this one? "Otitis externa is an infection of the ear canal, named for participants in a sport. What is it called?"

67% knows the answer to this question: "What is half of 44, plus 64? "

And do you know the answer to this one? "Who performed "Light My Fire" (1967)?"

62% knows the answer to this question: "What is Hydrogen's chemical symbol? "

And do you know the answer to this one? "What fluid-filled sac surrounds the human embryo?"

40% knows the answer to this question: "The name of what tree appears before Falls and Rapids in the names of Iowa cities? "

And do you know the answer to this one? "Who was the Duke of Lauenburg?"

79% knows the answer to this question: "What is the name for a severe type of headache? "

And do you know the answer to this one? "Which American brothers were pioneers in air travel?"

56% knows the answer to this question: "Popular in Greece and Turkey, what triangular pastry is filled with nuts and drizzled in honey-lemon syrup? "

And do you know the answer to this one? "The Bay of Pigs Invasion took place in which country?"

94% knows the answer to this question: "The 'Oregon Trail' and the 'Santa Fe Trail' were used by settlers in which country? "

And do you know the answer to this one? "What are the pilots who guide ship captains to docking areas safely called?"

57% knows the answer to this question: "Which famous actress married Joe DiMagigo in 1954? "

And do you know the answer to this one? "The main Festival of Britain site was on the banks on which river?"

33% knows the answer to this question: "What would fossilized skin feel like? "

And do you know the answer to this one? "What is it in milk that makes it hard to digest for millions of people?"

67% knows the answer to this question: "Which of these is a Nordic country? "

And do you know the answer to this one? "What is the capital city of Lebanon, which borders the Mediterranean Sea?"

63% knows the answer to this question: "Who is father of Jakob Dylan whose solo album 'Women and country' came out in 2010? "

And do you know the answer to this one? "What is the Arabic number equivalent to the Roman numeral XXII?"

87% knows the answer to this question: "Conjoined twins Tatiana and Krista Hogan appear to have had what superpower? "

And do you know the answer to this one? "Colombia is often affected by which of these meteorological phenomena?"