42% knows the answer to this question: "This is the biggest seller in US produce aisles, and the red delicious is the biggest selling variety. What is it? "

And do you know the answer to this one? "Which is true about bats in caves?"

52% knows the answer to this question: "Bill Gates developed what operating system to protect DOS against VisiOn, a graphical user interface developed by the VisiCalc people? "

And do you know the answer to this one? "Marvin's bike travels at 8 miles per hour. How far does he go in three and a half hours?"

33% knows the answer to this question: "What legendary rock band shared an Oscar in 1970 for "Best Song Score" for the movie Let It Be, a documentary on the making of their last album? "

And do you know the answer to this one? "Complete the title of the 1941 Oscar-winning film, "How Green Was My.."?"

36% knows the answer to this question: "What was the name of Lebanese singer Melhem Zein's first album? "

And do you know the answer to this one? "A turnkey worked in which type of building?"

37% knows the answer to this question: "First flown in 1936 in Germany, what was the Hindenburg? "

And do you know the answer to this one? "On what planet did the NASA space probe Pathfinder land in July 1997?"

85% knows the answer to this question: "As negotiated by Colonel Tom Parker, RCA paid Sun Records $40,000 for what singer's contract? "

And do you know the answer to this one? "What were the Beatles called in the early 1960s?"

47% knows the answer to this question: "What was "Spirit of St. Louis"? "

And do you know the answer to this one? "At what battle was Lord Nelson mortally wounded?"

95% knows the answer to this question: "What was Mao Zedong's army called? "

And do you know the answer to this one? "Of which country was Ayatollah Ali Khameini Supreme Leader at the start of the 90s?"

38% knows the answer to this question: "What is the name for a Swiss house with a steep roof? "

And do you know the answer to this one? "How many wisdom teeth do people usually have?"

83% knows the answer to this question: "In 1950s America, the phrase 'better dead than red' referred to which group of people? "

And do you know the answer to this one? "Which celebrity bride got married twice in a bikini?"

70% knows the answer to this question: "The very first art, drawn in dirt and wax, was found on the inner walls of what? "

And do you know the answer to this one? "Which is the most populated city in the US?"

36% knows the answer to this question: "What does CPU in a computer stand for: Central _______ Unit? "

And do you know the answer to this one? "Salad cream is made from the same ingredients as which other item, but in different proportions?"