72% knows the answer to this question: "I Walk the Line' is what male singer-songwriter's breakthrough song? "

And do you know the answer to this one? "What is the name of a shot that protects you from disease?"

40% knows the answer to this question: "You call that a knife? What movie, starring Paul Hogan, got men bragging about the size of their knives? "

And do you know the answer to this one? "What is XVI in Roman numerals?"

31% knows the answer to this question: "What is the most widely known Chinese contribution to medicine? "

And do you know the answer to this one? "Which South American canal shares its name with a hat?"

45% knows the answer to this question: "Which medical term means referring to the bones? "

And do you know the answer to this one? "Where would a French child wear "un pyjama"?"

50% knows the answer to this question: "Quattro is which number in Italian? "

And do you know the answer to this one? "What is a third of 210?"

78% knows the answer to this question: "What is three multiplied by twenty? "

And do you know the answer to this one? "In 2012, many people were stranded by floods in New South Wales and Queensland in what country?"

35% knows the answer to this question: "What is a quarter of 24? "

And do you know the answer to this one? "Which of these US states has the highest population?"

33% 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 gives blue cheese its color?"

33% knows the answer to this question: "What is 27 take away 8? "

And do you know the answer to this one? "Hawkeye and Trapper John were characters on what popular TV series which debuted in 1972?"

83% knows the answer to this question: "What is 23 added to 88? "

And do you know the answer to this one? "Which country, capital Bangkok, used to be called Siam?"

64% knows the answer to this question: "The failure to produce enough insulin leads to which medical condition? "

And do you know the answer to this one? "In what country would you find the world's third-longest river, the Yangtze?"

34% knows the answer to this question: "What 1993 movie included the characters named Casey Wong and RoboCop? "

And do you know the answer to this one? "Cirrhosis is a disease affecting which organ?"