48% knows the answer to this question: "Where is the Mekong River Delta? "

And do you know the answer to this one? "The ancient Egyptian civilization was based around which river?"

40% knows the answer to this question: "In the novel "Hans Brinker", what is Hans' sister's name? "

And do you know the answer to this one? "The sovereignty of which city was established by 1929's Lateran Treaty?"

54% knows the answer to this question: "Which country did Elvis Presley serve in after completing his basic training? "

And do you know the answer to this one? "William Wallace was a famous freedom fighter from which country?"

79% knows the answer to this question: "The Rolling Stones had which of these hit singles in 1967? "

And do you know the answer to this one? "Which of these musicians was a member of The Monkees?"

93% knows the answer to this question: "Which fruit, used in jellies, juices and wine, is a major export of Italy? "

And do you know the answer to this one? "Superman would fear what rare, well-hidden gas, whose name comes from the Greek for "hidden"?"

93% knows the answer to this question: "In what year did Nazi troops invade Soviet Russia? "

And do you know the answer to this one? "What year was the dictator Fidel Castro born?"

41% knows the answer to this question: "If you spend 20 dollars a week on a manicure, how much money is that in a year? "

And do you know the answer to this one? "How many yards are in 1/10 of a mile?"

88% knows the answer to this question: "Who won the Spanish-American War? "

And do you know the answer to this one? "Growing this provided much of the wealth on which Greek civilization was built, but the trees have deep roots that do a poor job of binding soil, so they ultimately cost Greece its agricultural productivity, contributing to its downfall. What is it?"

61% knows the answer to this question: "What puzzle, invented in 1981, was a cube made of 26 colored pieces that rotated? "

And do you know the answer to this one? "What is done to a baking tin to prevent food from sticking to it?"

48% knows the answer to this question: "Alcatraz was a prison on an island with a nice view of a major US city. What bay is the Rock in? "

And do you know the answer to this one? "Called America's Rhine, what river flows past West Point and separates Manhattan from New Jersey?"

42% knows the answer to this question: "What country's early culture was marked by keyhole-shaped burial mounds, guarded by warrior sculptures called kaniwa? "

And do you know the answer to this one? "When Prince Arthur, heir apparent, died at age 15, who suddenly was next in line to become king, and even ending marrying Arthur's wife Catherine of Aragon?"

49% knows the answer to this question: "Uncle Dave Macon was one of the first stars on the Grand Ole Opry, performing what kind of music? "

And do you know the answer to this one? "Who wrote the Grammy-winning song that begins with: 'Every breath you take - Every move you make - Every bond you break'?"