59% knows the answer to this question: "What stone used in sculpture takes a high polish and has veins and coloring from impurities? "

And do you know the answer to this one? "Which of these is not a tool used by painters?"

59% knows the answer to this question: "By what elemental property is the average weight of an atom classified? "

And do you know the answer to this one? "Which of these is a part of blood?"

87% knows the answer to this question: "Which figure sits at the center of the table in Leonardo da Vinci's "The Last Supper"? "

And do you know the answer to this one? "What number does the Roman numeral "X" stand for?"

71% knows the answer to this question: "Wilson Pickett had a hit in 1965 with which of these songs? "

And do you know the answer to this one? "What is a region of Earth in which all areas share the same time called?"

68% knows the answer to this question: "Who created Facebook? "

And do you know the answer to this one? "Which of these mints, developed by crossbreeding water mint and spearmint, is the source of menthol, which soothes colds and coughs?"

90% knows the answer to this question: "What crispy skinned duck is named after a Chinese city? "

And do you know the answer to this one? "What number, when added to 7, gives 11?"

49% knows the answer to this question: "What color is the caution light in a traffic signal? "

And do you know the answer to this one? "Cuba, like Texas, calls its flag La Estrella Solitaria. What does this mean?"

82% knows the answer to this question: "Solve this equation for N: 12N = 144? "

And do you know the answer to this one? "Find the next number (rounded off) in the following sequence: 39.00, 36.50, 34.00, 31.50..."

75% knows the answer to this question: "Which is Scotland's largest city? "

And do you know the answer to this one? "In 2001, what country's aging Luftwaffe pilots claimed to have been the first to break the sound barrier, back in 1945?"

91% knows the answer to this question: "Which company is responsible for messages called Tweets? "

And do you know the answer to this one? "Which light bulb should burn brightest?"

78% knows the answer to this question: "FAQ stands for ... "

And do you know the answer to this one? "Mu shu pork is a food item of what type of cuisine?"

46% knows the answer to this question: "What device consists of one or more cells that produce direct current? "

And do you know the answer to this one? "What is any permanent change to a gene called?"